It worked before but installing an update in Firefox seem to cause problems. I reinstalled older version of Firefox....no help.
Hi @runfried​
Welcome to the LastPass Community.
Can you confirm which device is in use with LastPass?
Have you already tried reinstalling Firefox?
Did you specifically use the latest LastPass download from our site?
Please re-install Firefox, and confirm the operating system + Firefox version for us here.
Once Firefox is re-installed, set up LastPass again and see if the error is still present.
If so, please share the exact error here.