<div>
Hi there! :)<br />
<br />
As a start, try opening Outlook in safe mode? When using Outlook in safe mode, disable all add-ins to check this issue. After that, if you can't find the problem, the other way is to just go straight into activating Office 365 Repair on the Control Panel.
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<div>
Hi,<br />
I would recommend running the fiddler application with Office 365 extension enabled to see what is happening when you have modern authentication turned on - <a href="https://techcommunity.microsoft.com/t5/Exchange/The-Office-365-Fiddler-Extension/m-p/289469" rel="ugc">https://techcommunity.microsoft.com/t5/Exchange/The-Office-365-Fiddler-Extension/m-p/289469</a>. &nbsp;This should help you identify where the problem is.<br />
<br />
Richard
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<div>
Hi, do you have more experience with this application ?<br />
<br />
Where do I find some manuals ?
</div>


System Architect

Eprs_Admin

<div>
<p>Hi,</p><p><br></p><ol id="isPasted" style=" text-align: start;"><li>Open <strong>Settings</strong> by <em>Win + I&nbsp;</em>or by searching it from the Start Menu.</li><li>Click on <strong>Accounts.</strong></li><li>Go to <em>Access work or school.</em></li><li>Click on the drop-down menu associated with your <span style=" text-align: left;">Office365</span> account and click <strong>Disconnect.</strong></li></ol>
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<div>
<div class="content wysiwyg-content">
Hi Experts,<br />
<br />
after a migration from computer, user and profile to a new domain we face some error.<br />
When the migrated client logs in, opens outlook, then it is not working. They use Office365.<br />
<br />
When I disable the modern authentication, then it works.<br />
Do you have any ideas about this issue ?
</div>
</div>


Hi Experts,

after a migration from computer, user and profile to a new domain we face some error.
When the migrated client logs in, opens outlook, then it is not working. They use Office365.

When I disable the modern authentication, then it works.
Do you have any ideas about this issue ?

outlook issue after ADMT migration

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