We enlisted some solutions below so make sure to give them a try.
How do I fix Wi-Fi Certificate error in Windows 10?
1. Check Time & Time Zone
Let’s start by making sure that the time and date are properly set. This seemed to be a problem for some users, due to the discrepancy between the system and the regional time. Resetting the Automatic time and date settings should resolve the problem, but you might also go for the manual approach if it fails.
2. Update your network drivers
Certificate errors with both WiFi and ethernet connections can also be caused by outdated network drivers. You can look up and download the latest drivers for your hardware online, but be careful because faulty drivers may cause even more problems. You can also update your drivers from Windows settings. Just open the Device Manager panel from the taskbar, find your network drivers, right-click on them and select update. Alternatively, use a third-party driver updater like DriverFix to easily get rid of the problem instantly. The program is portable, meaning that you just need to download it and you can run it straight for the client. It will then proceed to scan your system for outdated, damaged, or missing drivers, and then automatically fix them. DriverFix is packed with libraries containing all known drivers, and as long as you are connected to the Internet, you can thus gain access to all the latest versions of your required drivers.
3. Set the Windows Time service startup to Automatic
Windows Time Service regulates and maintains the date and time synchronization on a network. This service should start manually, when necessary. However, it can get into a stall and thus invoke the error at hand. Restarting this service should be enough, but you can also go for the Automatic Startup type which will ensure the service is always on as soon as the system boots.
4. Restore Advanced Network Settings to defaults
It usually isn’t necessary to meddle with the Advanced Network Settings, at least not for home users. And that’s how they should stay in order to address this issue. With one option being the only exception and that’s the Warn about certificate address mismatch which should be disabled.
5. Enable Hyper-V
Finally, we suggest enabling the Hyper-V system feature. This, of course, applies only to users who have issues with servers. These issues started after the update to Windows 10 1803 so you can also roll back the update as your last resort. That should do it. In case you have any questions or suggestions concerning Wi-Fi Certificate errors, we encourage you to post them in the comments section.
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