If you're running Office 2013, make sure that both Outlook and MSO are updated to the Decemupdates, or a later update release, before you use this registry key. FIXED Windows cannot find c:program filesmicrosoft officerootoffice16outlook.exe. In the Value data box, type 1, and then click OK. WORKAROUND Outlook cannot add guest groups in Microsoft 365. Right-click AlwaysUseMSOAuthForAutoDiscover, and then click Modify. Type AlwaysUseMSOAuthForAutoDiscover, and then press Enter. On the Edit menu, point to New, and then click DWORD Value.
While I can archive, I can only view the shared mailbox archive in an Outlook. In Registry Editor, locate and click the following registry subkey: HKEY_CURRENT_USER\Software\Microsoft\Exchange Ive recently set this up in Exchange 2013 on premise. Windows 7: Click Start, type regedit.exe in the search box, and then press Enter.
STATUS: FIXED Below are the two main options to resolve the issue: 1. This issue occurs if the Office 365 tenant has at least one mailbox in the cloud. Before you modify it, back up the registry for restoration in case problems occur.Ĭreate the following registry key to force Outlook to use a newer authentication method for web services, such as EWS and Autodiscover. On premise customers with the Office 365 client began seeing unexpected credential prompts in Outlook for Windows starting on or after November 11th. Serious problems might occur if you modify the registry incorrectly. Follow the steps in this section carefully.