hi dlkay, please try to create a new firefox profile and see if you can launch it again as non-admin: Profile Manager - Create, remove or switch Firefox profiles

I renamed the profile and I get the same result. I uninstalled Firefox, Deleted Firefox folder, Installed Firefox. Same problem.

FF still works fine as my Admin account. Still won't run as non-admin.

Another non-admin user is able to run FF. What else should I look for?

When FF is launched, it consumes all available memory before crashing only while logged on as this one user. I've also removed HKCU Firefox registry entries.

hi, i'm not sure what you meant by "I renamed the profile" - have you created a new one?

I figured out what I did wrong...

I renamed the profile folder under AppData\Local rather than Appdata\Roaming. I've created a new profile and it launches now. I restored bookmarks.