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Once the tool is installed, you can run it at any time to scan for hundreds of known issues in Office Step 2: Change the SMPT port to 587Ĭhange the Outgoing Server port to 587, check the result.Ĭonfiguration Analyzer Tool (OffCAT), which is developed by Microsoft Support teams. If you are not able to sign in, contact your email client to obtain correct user name and password. For example, if its a Gmail account, visit and Sign in. Open the folder and delete these sufolders: Application Cache/Cache.

Navigate to /Library/Application Support/Microsoft/Teams. Step 1: Verify that you can connect on the web First, test to see you can sign in using the web based application. Open Finder, click on the Go menu and select Go to Folder. Type all the necessary details and click Add Account. If you choose to use the Exchange protocol: Click Not IMAP/POP and select Exchange. If you choose to set your account on IMAP, you may use the following settings then click Add Account. Do you also see any Error Code about this issue?īased on the error message, please try the steps below: By default, Outlook is set to IMAP protocol.

Outlook for mac error code -1001