Solved: How do I fix CAA200004 and AADSTS90072 user account errors in Outlook desktop client?

Problem: We are using Microsoft 365 E5 with Office 365 Message Encryption enabled. When the external recipient opens encrypted emails using the Outlook desktop client, the external user receives a username and password login prompt instead of an MFA code. After external user enters their own login information and click on the Next button, CAA200004 …

Solved: How do I fix Outlook Mail Undeliverable 550 Access Denied Error?

Problem: Emails sent from an email client such as Microsoft Outlook or Outlook Express, show the result in an error and the email is undeliverable. The detailed error message as below: Undeliverable: 500 error System Administrator Your message did not reach some or all of the intended recipients. 550 relay not permitted Your message did …

Solved: How do I fix Outlook Sending or Receiving Reported Error (0x800CCC0F)?

Microsoft Outlook users encountered error 0x800CCC0F while sending or receiving email. The detail error message as below: Sending or Receiving reported error (0x800CCC0F): The connection to the server was interrupted. If this problem continues, contact the server administrator or Internet service provider (ISP). Follow below solution steps to resolve the sending or receiving error 0x800CCC0F.

[Solved] Microsoft Outlook Error “mailbox has been temporarily moved on Microsoft Exchange server”

Office 365 users reported Microsoft Outlook always prompts the error message “Your mailbox has been temporarily moved on Microsoft Exchange server” error when trying to use Microsoft Outlook to manage email addresses, regardless of what they choose at the prompt whether Use Temporary Mailbox or Use Old Data. The detail error message as below: You …

[Solved] How to Fix Outlook Send and Receive Progress Task Reported Error (0x8004011D) “The server is not available”

Windows users may get the Task ‘Microsoft Exchange Server’ reported error (0x8004011D) prompt when trying to perform sending and receiving emails on Microsoft Outlook. The detail error message as below: Task ‘Microsoft Exchange Server’ reported error (0x8004011D) : ‘The server is not available. Contact your administrator if this condition persists.’ Task ‘Microsoft Exchange Server – …