MDM
Senior Member
Yep, and no need to reset, just delete cert8.db and key3.db (or cert9.db and key4.db depending of the version) files in AppData\Roaming\Waterfox\Profiles\ and that should do it.@jata. Happend to me several times and it was always related to Firefox. Other browsers did just work. After resetting Firefox I could log-on normally again. I just think it has something to do with SSL en verifying certificates.