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Cannot Fill Item in Firefox

Community Member


Since the last Firefox update I get the following message when I try to fill in log in details for any website:

Cannot Fill Item in FireFox

Firefox is connected but its code signature could not be verified. Filling and other features are disabled until this configuration issue is resolved.

Any ideas why this could be?

Mac 10.10.5
1Password 6.2.1 (621002)
Firefox 53.0.3 (64-bit)
Avast Mac Security 2016 (12.7 - defs 17052500)


1Password Version: Not Provided
Extension Version: Not Provided
OS Version: Not Provided
Sync Type: Not Provided


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