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  5. How to solve “Can’t complete your request” error while accessing shared mailbox in Outlook webmail?
  1. Home
  2. Knowledge Base
  3. Microsoft Office 365 & Exchange
  4. How to solve “Can’t complete your request” error while accessing shared mailbox in Outlook webmail?

How to solve “Can’t complete your request” error while accessing shared mailbox in Outlook webmail?

Step 1: Sign into Office 365 admin portal via https://portal.office.com

Step 2: Click on Admin from the left pane and navigate to Groups >> Shared mailboxes.

Step 3: Click on the shared mailbox you cannot access.

Step 4: Scroll down to Manage mailbox permissions section and click Manage permissions.

Step 5: Respective to the permission click on Edit.

Step 6: Click on Add permissions and check the checkbox respective to your account and click Save.

Step 7: Remove and add the shared mailbox folder in Outlook.

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