Switch Windows 10 from RAID/IDE to AHCI

Systems installed with RAID drivers (among others Intel's RST) can be switched to AHCI without reinstalling Win10.

Run MSCONFIG and enable Safe Boot (minimal).

Reboot into UEFI/BIOS and change to AHCI.

Boot into safe mode, run MSCONFIG again and disable Safe Boot.

Reboot.

Corrupted certificate store in Firefox

Browsers usually demand adding an exeption for self-signed certificates, an update to Firefox recently broke this functionality. The solution is to remove the certificate store which forces FF to regenerate it at launch:

https://support.mozilla.org/en-US/kb/what-does-your-connection-is-not-secure-mean#w_corrupted-certificate-store