1Password on Windows not communicating with browsers

Since recently upgrading to the latest version of 1Password 4 on Windows, I am unable to fill any passwords in either Chrome (my main browser) or Firefox. Whenever I try, I get the error that the 1Password helper isn’t available.

I am running the latest version of the browsers and the relevant extensions.

I’ve uninstalled and reinstalled the extensions and have restarted the system multiple times.

Not sure what more to do about this issue. Any advice would be great.

1Password Version:
Extension Version: 4.6.7 (Firefox), (Chrome)
OS Version: Windows 10 x64 (10.0.15063)
Sync Type: Dropbox


  • I am having the same problem. I hope someone responds to our problem soon!

  • Hello @jban & @Nanci_Larsen,

    Can you check to ensure you have Microsoft .NET 4.6.1 or later installed please and if that doesn't resolve the issue can you restart your PCs and then create a diagnostic report for us. this link will guide you through the steps and has sections for the various supported versions of 1Password.


    Please do not post your Diagnostics Report in the forums

    The email address you will want to use is [email protected].

    Once you've sent the report you should received an automated response from us with a ticket ID. Can you post that here so we can promptly locate the diagnostic report and work on getting this resolved for each of you.

    The Microsoft .NET 4.6.1 or later is a new requirement for 1Password 4 for Windows which we will improve on documenting as we've seen it be the cause for a couple of people now.

  • Thanks for the response - I have sent a diagnostics report through. Because I'm running Windows 10 Creators Update, I can confirm that I'm running .NET Framework 4.7

  • After I installed Microsoft Net 4.6.1 it now works perfectly! Thank you so much for your help.

  • brentybrenty

    Team Member

    @Nanci_Larsen: Excellent! Thanks for the update. On behalf of lil bobby, you are most welcome! I'm glad to hear that helped. :)

    @jban: I see that we've received your email, so we can continue the conversation there. We'll take a look at the diagnostics and get back to you shortly! :)

    ref: IDM-59656-293

This discussion has been closed.