
Name the ne Dword DisableSupportDiagnostics. Right-click on General and select New > Dword (32-bit) Value.
Go to HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Outlook\Options\General. Select Start, type regedit.exe and select the Registry editor entry from the list of results. Workaround for the Outlook sign-in issueĪdministrators need to modify the Windows Registry to turn off Support Diagnostics in Outlook. The bug is related to how Outlook is authenticating for the diagnostics in some situations. To work around the issue, you can turn off Support Diagnostics, which turns off the option to submit an In App ticket using Help and then selecting Contact Support. Microsoft notes that disabling the feature will prevent the submission of app tickets using Help and selecting Contact Support. Turning off Support Diagnostics will resolve the issue on the user machine. The company has published a workaround for affected customers to resolve the issue. The bug is related to "how Outlook is authenticating for the diagnostics in some situations", according to Microsoft's preliminary investigation. The Outlook team is investigating the issue, according to Microsoft. Thunderbird doesn't use OAuth by default, which is probably why it works.Microsoft confirmed the sign-in issue on the main website for personal Outlook accounts earlier this week. It's also worth pointing out that, for unknown reasons, the Gmail app for Android still seems to connect to Outlook accounts just fine, according to Neowin, and we were also able to connect with no issues using Mozilla Thunderbird.
If that doesn't work in your email client, Microsoft has a more detailed list of the settings you'll need to use to set up third-party email apps manually. This, in addition to your Outlook credentials, will allow you to keep receiving and sending email using third-party apps, at least until Microsoft fixes its ongoing issues with OAuth. The steps to do this will naturally vary depending on your email client, but you'll need to set up the account to use the following servers:
Since OAuth won't allow email clients to obtain data from Outlook servers to receive email, all the user needs to do is set up the email servers manually. However, eM Client user Gary has provided another solution for free/personal Outlook accounts. However, free Hotmail/Outlook accounts can't connect to Exchange servers, so this will only work for business accounts. One solution that Microsoft initially provided was mentioned above - adding your email account as an Exchange account, rather than an IMAP account, which is the more "standard" protocol for emails.