I just tried to upgrade to 7.4.750 but it fails with the following error:
I closed all browsers and killed browser processes and tried again with the same result.
I can't find evidence that a firewall, virus protection or some other security feature is blocking the upgrade.
I uninstalled the old version of 1P, but shouldn't have done that because the clean install also failed and now I'm stuck without 1P.
1Password Version: 7.4.750
Extension Version: Not Provided
OS Version: Windows 10
Sync Type: Not Provided