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check legacyauthprotocolsenabled the remote server returned an error: (401) unauthorized

Updating Microsoft 365 Permissions for Veeam Backup for ...
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... error: The remote server returned an error: (401) Unauthorized. ... and verify that all of the necessary permissions have been added.
Veeam Backup for 365 cannot enter Sharepoint Online ...
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It starts the download then fails with a 401: Unauthorized, ... 7/27/2018 11:11:23 AM 33 (1452) Error: The remote server returned an error: ...
How to resolve the unauthorized error 401 during Office 365 ...
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The remote server returned an error: (401) Unauthorized. ... Try to check complete detail of the batch migration and edit the information.
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"The request failed with HTTP status 401: Unauthorised" The account should have the required permissions, it passed the checkboxes and it ...
The remote server returned an error: (401) Unauthorized ...
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Changing the property LegacyAuthProtocolsEnabled to true fixed the issue. I opened the SharePoint online management console and changed the ...
SharePoint Online: "The remote server returned an error (401 ...
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Exception calling “ExecuteQuery” with “0” argument(s): “The remote server returned an error: (401) Unauthorized.” Reply. BOUCHAALA. June 8, 2021 at 4:17 PM.
Veeam Backup for Office 365 Permissions | Virtual Allan
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If the user is not at Teams Administrator, you will see an error message like “Check LegacyAuthProtocolsEnabled: Legacy authentication”.
The remote server returned an error: (401) Unauthorized - Esri ...
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Error: The remote server returned an error: (401) Unauthorized. Error Message. Upload Project returns the below error: ---- Business Analyst Desktop Errors: ...