This message was deleted.
# microsoft-365
s
This message was deleted.
d
I would like you to try something that may seem a bit odd. It may not be related to the issue we are having though. Our current situation is similar to the article you posted, but the the "fix" doesn't work. We also get Error 1001 in Outlook. The work-around that is the most consistent and successful has been to delete the "Experiments" registry keys before opening Outlook. Launching Outlook via batch file that deletes the keys.
@echo off
reg delete hkcu\software\Microsoft\Office\16.0\Common\Experiment /f
reg delete hkcu\software\Microsoft\Office\16.0\Common\ExperimentConfigs /f
reg delete hkcu\software\Microsoft\Office\16.0\Common\ExperimentEcs /f
<path to Outlook.EXE>
I just found this article, which you may have seen already: https://learn.microsoft.com/en-us/microsoft-365/troubleshoot/authentication/connection-issue-when-sign-in-office-2016 Symptom 4 matches my situation, except that I have persistent machines, but I have the exact error mentioned in the logs they recommend turning on. I have forwarded this link to the support ticket we already have open. I am trying to get them to escalate the ticket and hoping this will give the ammunition needed.