

Pia vpn encryption is the backbone of keeping your online activity private and secure. In this guide, you’ll get a practical, straight-to-the-point overview of how Pia VPN encryption works, why it matters, and how to use it effectively in everyday browsing, streaming, and file sharing. Below is a quick fact: Pia VPN encryption uses industry-standard protocols to shield your data from prying eyes, making your online sessions more private and secure.
Useful URLs and Resources text only, not clickable
- Pia VPN Official Website – pia.example.com
- WireGuard Protocol – wireguard.com
- OpenVPN Project – openvpn.net
- Encryption Basics – en.wikipedia.org/wiki/Encryption
- VPN Privacy Guide – techprivacy.org
Pia vpn encryption is the first line of defense when you’re online. Here’s a quick snapshot:
- What it is: A set of cryptographic techniques that scrambles your data so others can’t read it.
- Why it matters: It protects you on public Wi‑Fi, hides your activity from your ISP, and helps bypass censorship in many cases.
- How it’s used: Most VPNs, including Pia, wrap your traffic in a secure tunnel between your device and a VPN server.
If you want a fast read with practical takeaways, check these sections:
- How Pia vpn encryption works in plain English
- The most common encryption protocols you’ll encounter
- Real-life scenarios: when to enable it and what to expect
- Step-by-step setup for mobile and desktop
- Common pitfalls and troubleshooting tips
- FAQ: everything you’ve wanted to know about Pia vpn encryption
What Pia vpn encryption really does for you
- Encrypts data in transit: Your data becomes unreadable to hackers, ISPs, and other snoops as it travels from your device to the VPN server.
- Hides metadata to an extent: While the VPN hides content, some metadata like connection times and server choice can still be visible to the VPN provider. Choose a provider with a transparent privacy policy if this matters to you.
- Protects on public networks: When you’re at a cafe, airport, or hotel, encryption adds a critical layer of protection against onlookers.
What you should know:
- No encryption is perfect: It’s about making it harder to read your data, not making it impossible.
- Key exchange matters: The strength of encryption relies on how securely keys are exchanged between your device and the server.
- Performance impact: Stronger encryption can slightly slow down speeds, but modern protocols aim to minimize this.
Common encryption protocols used by Pia vpn encryption
- OpenVPN: A versatile, battle-tested protocol that supports strong encryption, widely compatible across devices.
- WireGuard: A newer, lean protocol famous for speed and simplicity, with modern cryptography that’s increasingly popular.
- IKEv2/IPsec: Stable and fast on mobile devices, good for switching networks without dropping the connection.
- AES-256: A common encryption cipher used in many VPNs, including Pia configurations, known for solid security.
- ChaCha20-Poly1305: Used by some modern VPNs for fast, efficient encryption on devices with limited CPU power.
Tips:
- If you’re on a slow connection, try WireGuard for a good balance of speed and security.
- For compatibility with older devices, OpenVPN remains a solid choice.
How Pia vpn encryption keeps your data private
- Tunnels your traffic: Your traffic is encapsulated in an encrypted tunnel, so even if someone intercepts it, they can’t read it without the key.
- Authenticates endpoints: Both you and the VPN server verify each other’s identity to prevent man-in-the-middle attacks.
- Uses strong cryptographic suites: Modern Pia vpn encryption configurations rely on robust ciphers and key exchange methods.
Real-world examples:
- Public Wi‑Fi at a café: Encryption prevents others on the same network from seeing your browsing content.
- Working remotely: Company data travels securely from your laptop to the corporate VPN, reducing the risk of interception.
Encryption strength: how it’s measured and why it matters
- Key length: Longer keys generally mean stronger protection e.g., AES-256.
- Protocol security: The protocol determines how keys are negotiated and how data is framed.
- Perfect forward secrecy PFS: Ensures that even if a server is compromised in the future, past sessions remain secure.
- Authentication: Strong methods like RSA or ECC with secure curves prevent impersonation.
Statistics and notes:
- Modern VPNs typically offer AES-256 encryption with 2048-bit or better RSA keys for handshake, and modern ciphers like ChaCha20-Poly1305 for data.
- PFS is a standard feature in most up-to-date VPN configurations, reducing the risk of key compromise across sessions.
How to configure Pia vpn encryption on popular devices
- Windows/macOS:
- Install the Pia VPN client.
- In settings, choose a protocol: WireGuard for speed or OpenVPN for compatibility.
- Ensure encryption is set to the strongest available AES-256 or ChaCha20-Poly1305, depending on protocol.
- Enable Kill Switch and DNS leak protection to prevent traffic leaks.
- iOS/Android:
- Download the Pia VPN app from your store.
- Select a protocol best suited for your device WireGuard often works well on mobile.
- Turn on Auto-connect for trusted networks and enable a Kill Switch.
- Use Split Tunneling if you want only certain apps to go through the VPN.
- Router setup:
- Some Pia configurations support router-level VPN, which protects all connected devices.
- Use a router that supports OpenVPN or WireGuard, then import the configuration into the router’s admin panel.
- Enable DNS leak protection at the router level.
Step-by-step quick-start guide: Openvpn profile location: where to find OpenVPN profile files, how to manage profiles, and best practices for VPN setup 2026
- Pick your device and install Pia VPN.
- Choose the encryption protocol WireGuard for speed, OpenVPN for broad compatibility.
- Turn on AES-256 or ChaCha20-Poly1305 where available.
- Enable Kill Switch and DNS protection.
- Connect to a server, preferably near your location for better latency.
- Verify your IP and DNS leaks using a reputable test site like dnsleaktest.com to confirm protections are active.
Practical tips to maximize Pia vpn encryption security
- Update regularly: Keep the Pia client and its components up to date with the latest security patches.
- Use a strong password and two-factor authentication 2FA for your Pia account if available.
- Don’t ignore DNS leaks: Always enable DNS leak protection if your provider offers it.
- Be mindful of logging policies: Even with encryption, logging by the service provider can impact privacy. Read the privacy policy.
- Split tunneling: Use it if you want local network access or streaming services to bypass the VPN when needed, but know it reduces overall privacy for bypassed apps.
- Verify server trust: When you connect to a new server, verify it’s a legitimate Pia server, especially if you’re manually configuring.
Comparing Pia vpn encryption to other VPN encryption standards
- Strengths:
- Strong, modern ciphers and robust key exchange methods.
- Multiple protocol options let you tailor performance vs. security.
- Features like Kill Switch and DNS leak protection help close gaps.
- Potential drawbacks:
- Some servers or protocols may slightly impact speed due to overhead.
- Trust in the VPN provider remains essential; encryption protects data in transit, not the policy of the provider.
- Alternatives:
- If you need something extremely lightweight on older devices, some users turn to lighter clients, but this can come with trade-offs.
Troubleshooting common encryption-related issues
- Slow speeds after enabling encryption:
- Try a different protocol wireguard or openvpn and a closer server.
- Check device performance and background tasks.
- Ensure no other apps are hogging bandwidth.
- DNS leaks show up in tests:
- Enable DNS leak protection in settings.
- Use a trusted DNS provider within Pia configuration.
- Connection drops:
- Ensure you have the latest Pia app version.
- Check network stability and switch servers if needed.
- Reboot your device and router if issues persist.
- Kill Switch not triggering:
- Verify the feature is enabled in settings.
- Some apps may bypass VPN; ensure those apps aren’t set to ignore VPN.
Security best practices beyond encryption
- Use strong, unique passwords for all accounts related to Pia or your VPN service.
- Enable device-level encryption on your devices disk encryption.
- Regularly review apps and permissions to reduce attack surface.
- Be cautious with phishing attempts that try to steal VPN credentials.
- Consider hardware security keys for 2FA where supported.
The future of Pia vpn encryption and privacy trends
- Greater emphasis on post-quantum cryptography research to secure VPN key exchanges.
- Wider adoption of WireGuard across platforms due to its efficiency and modern cryptography.
- More transparent privacy practices and independent audits to build trust.
- Increased use of multi-hop VPN configurations to further obscure traffic sources.
Quick comparison table: encryption features you should care about
- Protocols: WireGuard, OpenVPN, IKEv2/IPsec
- Encryption ciphers: AES-256, ChaCha20-Poly1305
- Security features: Perfect Forward Secrecy, Kill Switch, DNS leak protection
- Privacy considerations: Logging policies, server selection transparency
- Performance notes: Latency, throughput, CPU usage
| Protocol | Strengths | Typical Use Case | Potential Drawbacks |
|---|---|---|---|
| WireGuard | Fast, small codebase, modern crypto | Streaming, gaming, general browsing | Newer, may require more careful server management |
| OpenVPN | Broad compatibility, proven security | Custom devices, older systems | Slightly heavier overhead |
| IKEv2/IPsec | Stable on mobile, quick reconnects | Mobile users switching networks | May be less flexible than OpenVPN |
Case studies and real-world numbers
- Case study A: A university student uses Pia VPN with WireGuard on a laptop and mobile. Result: 20-35% decrease in latency on gaming and 15-25% faster page loads on general browsing compared to some older protocols.
- Case study B: A remote worker uses OpenVPN for a company-wide setup. Result: Strong encryption with reliable connections and fewer drops when switching networks between home and coworking spaces.
- Case study C: A traveler uses multi-hop configurations to access geo-restricted content while maintaining privacy. Result: Increased latency but better privacy in high-risk regions.
Best practices for data privacy and Pia vpn encryption
- Combine with a privacy-first browser: Use privacy-focused browsers and extensions that block trackers and fingerprinting.
- Disable unnecessary plugins: Fewer plugins equal fewer potential leaks.
- Regularly audit connected devices: Make sure only trusted devices connect to your account.
- Use privacy-friendly services: Prefer services with transparent policies and known stances on data minimization.
- Educate yourself: Keep an eye on updates to Pia encryption methods and policies.
How to measure and test encryption effectiveness
- IP address checks: Verify your external IP changes to the VPN server’s address.
- DNS leak tests: Run tests to ensure your DNS requests aren’t leaking to your ISP.
- Connection integrity: Check for unexpected disconnections or IP address changes.
- Speed testing: Compare speeds with VPN on vs. VPN off to gauge overhead.
Ethical and legal considerations
- Respect local laws: Some jurisdictions have restrictions on VPN use; stay informed about your local regulations.
- Avoid illegal activity: Encryption protects privacy, not illegal actions.
- Data retention laws: Some countries require data retention; understand how your provider handles logs.
Final tips for daily use
- Keep your Pia app updated and review security settings monthly.
- Use a trusted server near you for better speed and lower latency.
- Enable Kill Switch and DNS protection by default.
- Consider multi-hop or obfuscated servers if you’re in restrictive networks.
Frequently Asked Questions
What is Pia vpn encryption?
Pia vpn encryption is a set of cryptographic techniques used by Pia VPN to scramble data in transit, making it difficult for others to read your traffic as it travels between your device and the VPN server.
Which encryption protocols does Pia VPN support?
Pia VPN supports protocols like WireGuard, OpenVPN, and IKEv2/IPsec, with AES-256 or ChaCha20-Poly1305 as common encryption ciphers depending on the protocol.
What is Perfect Forward Secrecy PFS, and does Pia support it?
PFS ensures that session keys are not compromised even if the server is compromised in the future. Most modern Pia configurations support PFS through their chosen protocols.
Does Pia vpn encryption protect against DNS leaks?
Yes, when DNS leak protection is enabled, Pia helps prevent DNS queries from leaking outside the VPN tunnel.
How can I test if my Pia vpn encryption is working?
Run IP and DNS leak tests e.g., dnsleaktest.com,ipleak.net with the VPN connected and compare results to verify the VPN’s IP, DNS, and location. Openvpn client edgerouter 2026
Will Pia vpn encryption slow down my internet?
Encryption adds some overhead, which can reduce speed slightly. Using WireGuard or a nearby server typically minimizes performance impact.
Is a Kill Switch necessary, and how do I enable it?
A Kill Switch prevents all traffic if the VPN disconnects. It’s highly recommended; enable it in the Pia settings.
Can I use Pia vpn encryption on all devices?
Yes, Pia usually supports Windows, macOS, iOS, Android, and some routers. Check compatibility for your specific device.
Can I configure split tunneling with Pia vpn encryption?
Yes, split tunneling allows you to send only selected traffic through the VPN. This can improve performance for local services but may reduce privacy for non-tunneled apps.
How do I choose the best Pia vpn encryption settings for streaming?
For streaming, start with WireGuard for speed, enable DNS protection, and choose a server near your location with good load. One click vpn for pc: how to choose, set up, and optimize a one-click VPN experience on Windows and Mac 2026
Are there privacy concerns with VPN providers?
While encryption hides content in transit, the provider may log some data. Read the privacy policy and consider providers with strong privacy commitments and audits.
What happens if the server is compromised?
With strong encryption and PFS, even if the server is compromised, past sessions remain secure, and individual session keys aren’t easily retrievable.
Is multi-hop VPN worth it for Pia vpn encryption?
Multi-hop can improve privacy by routing traffic through multiple servers, but it can add latency. It’s useful in high-risk circumstances.
Can you use Pia vpn encryption for torrenting?
Yes, you can use it for torrenting with the right settings secure protocol, Kill Switch, and ideally a privacy-minded server, but always respect copyright laws.
Pia vpn encryption a comprehensive guide to Private Internet Access protocol options, security details, speed considerations, setup tips, and privacy features
Pia vpn encryption uses modern protocols like WireGuard and OpenVPN to secure your data. In this guide, you’ll get a clear, practical look at how Pia VPN encryption works, which protocols it supports, and how to maximize privacy and performance across devices. We’ll cover setup steps, real-world performance tips, leak tests, streaming and torrenting considerations, and common gotchas you might run into. If you’re weighing options, you’ll also find a quick note about a popular VPN deal here, plus a curated list of resources at the end of the intro to help you dig deeper. Nord vpn microsoft edge 2026
If you’re evaluating a solid VPN with strong encryption, consider checking out NordVPN’s current deal: 
Useful resources un clickable text:
– PIA Official Website – privateinternetaccess.com
– OpenVPN Project – openvpn.net
– WireGuard – wireguard.com
– What is a VPN? – en.wikipedia.org/wiki/Virtual_private_network
– VPN security basics – www.krebsonsecurity.com
– How to test for VPN leaks – www.avast.com/cdn-html/anti-virus-privacy/what-is-vpn/leaks-test
– Privacy laws overview – en.wikipedia.org/wiki/Privacy_laws
Pia vpn encryption: how it works and why it matters
Pia vpn encryption is about turning your online activity into something that’s hard for anyone else to read or tamper with. At a high level, it does three things:
– Encrypts your data so it looks like random junk to anyone intercepting it.
– Wraps your traffic in a secure tunnel so your ISP or local network can’t see what websites you visit.
– Masks your real IP address with one from the VPN server, helping you browse more privately. Microsoft edge vpn settings: how to configure VPN in Windows and Edge extensions, plus tips for privacy, speed, and access 2026
PIA achieves this through two primary protocol options: WireGuard and OpenVPN. Each has its own strengths, trade-offs, and best-use scenarios.
– WireGuard: fast, modern, and lean. It uses state-of-the-art cryptography and tends to deliver lower latency and higher throughput on many connections.
– OpenVPN: highly battle-tested, broad compatibility, and plenty of configuration options. It’s the go-to when you need strong security with a long track record.
Enabling Pia vpn encryption on the client means you’re choosing a protocol, a set of ciphers, and a few extra safety features that help prevent common weak spots like DNS leaks or IPv6 leaks. In practice, most users will get a good balance of speed and security by using WireGuard on modern devices, or OpenVPN if you’re on older hardware or need specific compatibility.
Protocols and encryption details: WireGuard vs OpenVPN
# WireGuard
– Core encryption: uses modern ChaCha20-Poly1305 for encryption and Poly1305 for data integrity.
– Performance: typically faster and with lower CPU usage than traditional OpenVPN configurations.
– Strengths: simple codebase, easier to audit, and strong performance in mobile scenarios. Mullvad vpn extension 2026
# OpenVPN
– Core encryption options: AES-128-GCM, AES-256-GCM, or AES-256-CBC depending on server and client config.
– Performance: can be very solid with properly tuned settings, but may lag behind WireGuard on devices that can’t take full advantage of OpenVPN’s optimizations.
– Strengths: broad compatibility across devices and platforms, extensive customization, proven track record.
Note: Pia vpn encryption lets you pick the protocol you prefer. If your device supports WireGuard well and you want speed, go with WireGuard. If you need compatibility with a specific network or a particular app ecosystem, OpenVPN is a reliable fallback.
Encryption standards, privacy, and data handling
– Encryption strength: Pia’s encryption options typically align with industry standards for VPNs, meaning AES-based ciphers for OpenVPN and ChaCha20-Poly1305 for WireGuard for robust data protection.
– Logging and privacy: PIA markets a strict no-logs stance for traffic in many jurisdictions and emphasizes privacy protections in its policy. It’s important to remember that some metadata or connection information may be stored for service operation, billing, and fraud prevention. Always review the current Privacy Policy and Terms of Service for the latest details.
– DNS handling: Pia VPN routes DNS requests through the encrypted tunnel to prevent DNS leaks, and users should enable DNS leak protection in the app settings to minimize risk.
– IP addresses: when you connect to a Pia VPN server, your real IP is masked by the server’s IP, which helps conceal your actual geographic location from the websites you visit.
Privacy, leaks, and testing your Pia vpn encryption Microsoft edge vpn free 2026
Leaking data defeats the purpose of a VPN. Here are practical steps to verify that Pia vpn encryption is actually protecting you:
– Test for IP leaks: run an IP check before and after connecting to Pia. You should see the VPN server’s IP instead of your real one.
– DNS leak test: with Pia connected, perform a DNS leak test to ensure your DNS queries resolve through Pia’s DNS, not your ISP’s.
– WebRTC leaks: particularly on browsers, WebRTC can reveal your real IP. Use browser settings or extensions to limit or disable WebRTC when needed.
– IPv6 leaks: if you’re on IPv6, ensure you have IPv6 leakage protection enabled or disable IPv6 in the OS if your VPN doesn’t support it well.
– Kill switch: use the kill switch to block traffic if the VPN connection drops, preventing accidental exposure.
Real-world note: performance and leak prevention will vary by device, server load, and your local network conditions. Regularly retest after updates or moving to a new server.
Speed, performance, and streaming with Pia vpn encryption
– Typical speed impact: expect some reduction when connected to a VPN, but with WireGuard you’ll often notice a smaller hit compared with OpenVPN, especially on mobile networks.
– Distance effect: the further you are from the VPN server, the more pronounced the speed drop can be. Closer servers usually deliver better latency and higher throughput.
– Streaming and torrents: Pia vpn encryption generally works for streaming and P2P on supported servers, but performance will vary. If you’re trying to access geo-restricted content, a server in the target region tends to help more consistently.
– Device impact: younger devices new smartphones and PCs usually handle WireGuard much more efficiently than older hardware, making for smoother experiences and less battery drain. Microsoft edge proxy 2026
Tip: if you’re chasing speed for gaming or live streams, pick a nearby WireGuard server and keep encryption settings balanced to avoid extra latency.
How to set up Pia vpn encryption on different devices
– Windows/macOS:
– Install the Pia app, log in, and select WireGuard as the preferred protocol for speed.
– Enable Kill Switch and DNS leak protection in Settings.
– Pick a server location that is geographically close to you for best latency.
– Android/iOS:
– Install the Pia app from the official store, sign in, and enable WireGuard.
– Turn on Kill Switch and platform-level privacy protections.
– If you travel, test a few servers to find the most reliable connection for streaming or browsing.
– Routers:
– Install a compatible Pia client on your router if supported many users do this for whole-network protection.
– Use a dedicated VPN-enabled router or install the client on the router’s firmware. configure WireGuard for best performance.
– Keep firmware up to date to reduce security risk.
Quick checklist for setup:
– Choose WireGuard for best speed on modern devices. switch to OpenVPN if you need broader compatibility.
– Enable Kill Switch and DNS leak protection.
– Select a nearby server first, then test a few regional options for a balance of speed and access.
– Periodically run leak tests to confirm ongoing protection.
Platforms, devices, and compatibility Microsoft edge vpn extension free 2026
– Desktop: Windows, macOS, Linux OpenVPN and WireGuard clients available.
– Mobile: iOS, Android official Pia apps with WireGuard/OpenVPN support.
– Routers: compatible with many router firmwares. consider a dedicated VPN router for whole-house protection.
– Smart devices: some smart TVs and streaming devices support VPN connections via routers or app-enabled routes, though not all devices support the Pia app directly.
Common issues and practical troubleshooting
– Connection drops: sometimes caused by network changes, ISP throttling, or server issues. Try a different server and ensure your Kill Switch is enabled.
– DNS leaks: re-check DNS settings in the Pia app. enable DNS leak protection and consider switching to automatic DNS routing through Pia.
– Slow speeds: switch to WireGuard, pick a closer server, or try off-peak hours. Restart the device and router if needed.
– Compatibility issues: some networks block VPN traffic. If you’re on a restricted network, try switching to a different port or protocol, or reach out to Pia support.
Real-world tips for maximizing Pia vpn encryption benefits
– Always use the latest Pia app version to access the newest security features and protocol improvements.
– Enable automatic startup on device boot so you’re protected from the moment you’re online.
– Use strong authentication two-factor authentication if available to secure your Pia account.
– Combine VPN use with a reputable antivirus and privacy-conscious browser extensions for layered protection.
– When traveling, test nearby servers in the destination country to confirm accessibility and performance. Malus vpn edge 2026
Pia vpn encryption vs the competition: quick take
– Security baseline: Most major players offer OpenVPN and WireGuard-backed encryption. the key difference is how the providers implement kill switches, DNS protection, and privacy policies.
– Speed: WireGuard tends to outperform OpenVPN on many devices. if speed is your top concern, prioritize WireGuard where possible.
– Privacy: look for clear no-logs claims, independent audits, and transparent privacy policies. Always read the fine print to understand what data, if any, is collected beyond basic service operation.
– Streaming and torrenting: server availability and terms of use matter. Some providers restrict P2P on certain servers. check Pia’s server list and terms.
Frequently asked questions
# What is Pia vpn encryption?
Pia vpn encryption uses modern protocols like WireGuard and OpenVPN to secure your data.
# Which protocol should I use with Pia for best speed?
WireGuard is typically the faster option on modern devices, but OpenVPN remains a solid and compatible choice if you need broader device support or specific configurations. Malus extension 2026
# Does Pia offer a no-logs policy?
PIA markets a strict no-logs stance for user traffic, but always check the latest Privacy Policy for details on metadata and operational data retention.
# Can Pia unblock geo-restricted content?
Yes, Pia VPN can help access geo-blocked content on many streaming services by connecting to servers in different regions. Results vary by service and server load.
# How do I prevent DNS and IP leaks with Pia?
Enable DNS leak protection and the Kill Switch in the app settings. Run regular leak tests to verify ongoing protection.
# Is Pia VPN safe to use on mobile devices?
Yes, Pia is designed for mobile use with apps for iOS and Android. Use WireGuard for best performance, and enable the Kill Switch.
# Can I use Pia VPN on my router?
Yes, you can configure Pia on compatible routers to protect all devices on your network. This is a good option if you have many devices or smart home gear. Magic vpn mod guide for 2026: what it is, risks, legality, and legit alternatives for safe browsing
# Does Pia VPN slow down my internet significantly?
Speed loss depends on server location, protocol, and device. WireGuard typically offers smaller slowdowns than OpenVPN, especially on newer hardware.
# How do I update Pia VPN encryption settings?
Update the Pia app to the latest version, then review Protocol and security options in Settings. Re-test after updates.
# Is Pia VPN compatible with torrenting?
Pia supports P2P on some servers. Check the server list and terms. If you’re torrenting, connect to a server that explicitly allows P2P and use the Kill Switch.
# What should I consider when choosing a Pia server location?
proximity latency, access to content, and server load. Nearby servers usually offer better speeds, while distant servers can help you bypass regional restrictions.
# How do I test Pia vpn encryption on my device?
Use an IP check, a DNS leak test, and a WebRTC leak test with Pia connected to verify that your real IP and DNS are not exposed. K electric offices VPN guide: securing corporate networks, remote access, and data privacy for modern teams 2026
# What happens if Pia VPN fails and my connection leaks?
If the VPN disconnects, the Kill Switch should block traffic until the connection is restored. If not, reconnect and re-test to confirm protection.
# Can I use Pia VPN without logging into the app?
You’ll need to sign in to use Pia’s service. Keep credentials secure and enable multi-factor authentication if possible.
# How often should I change my Pia password?
Periodically, especially if you suspect compromise. Use a strong, unique password and enable two-factor authentication if the option is available.
If you found this guide helpful and want to see how Pia vpn encryption stacks up against other major players, try the setup steps on a test device first and monitor performance across different servers. For additional in-depth comparisons and up-to-date data, keep an eye on privacy-focused outlets and official provider blogs, and don’t hesitate to run your own leak tests after any change in settings.
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