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Enpass Extention 6.6.0 thows Error 403 when using Firefox 87.0


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I recently installed the new Mozilla Firefox 87.0 on Mac OS (Big Sur 11.2.3).

While working perfectly on Firefox 78.9.0, the browser extention (6.6.0) throws an "Error 403", pointing out, the installed browser extension seems to be unauthorized.

I reinstalled the extention with the same result.


Any help or hints on this?


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Hi @Stebbele,

Sorry for the inconvenience caused to you.

Sometimes rebooting the device might help with this issue, we suggest you to please try rebooting your device if you haven't tried it yet. If the problem persists please uninstall the Firefox browser and install it again.

Please revert to us with the answer to the following queries and we will get it sorted out for you:

  • Which Enpass version are you using?
  • Are you facing the same problem with other browsers too?
  • Are you using any Antivirus or third-party security-related extension?

Thanks for your co-operation.

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  • 2 years later...

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