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[SOLVED] Failed To Disable The Mailbox Error in Exchange Online (2024)

Encountering the failed to disable the mailbox error in Exchange Online can be a perplexing challenge for administrators and users alike. The frustration of attempting various solutions without success can be disheartening. However, fear not! In this comprehensive guide, we unveil a step-by-step approach to effortlessly resolve this issue.

Failed to disable the mailbox

Join us on a journey through the intricacies of Exchange Online as we demystify the process of addressing the failed to disable the mailbox error. Whether you are faced with this dilemma for the first time or seeking a more refined solution, our guide is tailored to empower you with the knowledge needed to navigate and conquer this obstacle.

From understanding recipient categories to executing PowerShell commands and ensuring seamless synchronization with the cloud, we leave no stone unturned. Follow our carefully curated steps to not only fix the error but also gain valuable insights into the intricacies of managing mailboxes in Exchange Online.

So, let’s dive in and unravel the mysteries of mailbox management, ensuring a smoother and error-free experience for your Exchange Online environment.

So, there I was, faced with the same error on a user account. Uncertain about the troubleshooting steps, I scoured the internet, tried a few things, but no luck. However, fear not! I cracked the code with these steps.

Let’s examine the recipient category of the impacted mailbox within Exchange Online. Just connect to Exchange Online PowerShell and run this nifty command:

Get-Mailbox “Mailbox Name” | fl RecipientType*

Fantastic! If the recipient type details is a user mailbox, export the mailbox content as a PST file to ensure no data loss. Once that’s done, disable the mailbox on-premises using these steps:

  • Access your Exchange Server.
  • Launch the “Exchange Management Shell”
  • Execute the disable command.

Disable-Mailbox “Mailbox Name” -Confirm:$false

For remote user mailboxes, use this command:

Disable-RemoteMailbox “Mailbox Name” -Confirm:$false

Now, be patient. Allow a few hours for the changes to sync in the cloud. Once synced, enable the on-premises object, ensuring the recipient type is a remote user mailbox. The command for enabling a remote mailbox is:

Enable-RemoteMailbox “test248” -RemoteRoutingAddress

Note: Replace with your domain address.

Wait for the cloud to catch up, assign the Exchange Online license to the user account, and check the status. Voila! The pesky failed to disable the mailbox message is gone.

Now, you can import the PST into the user’s mailbox.

If you want to delve deeper, check out office 365 mailbox does not exist: unlocking solution

Now, over to you! Did I cover everything, or do you have questions? Feel free to drop a comment below—I’m all ears!

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