A mailbox couldn’t be found for Office 365 [Fix]

4 min. read

Updated onOctober 4, 2023

updated onOctober 4, 2023

Share this article

Improve this guide

Read our disclosure page to find out how can you help Windows Report sustain the editorial teamRead more

If you have a received a newemail addressfrom your university or company and you’re trying to setup it withOffice 365account, you may encounter a few temporary and commonerrors.

One sucherrorisSomething went wrong A mailbox couldn’t be found for Office 365error. Thiserrorusually occurs with when you try to access newOutlookaccount viaOffice 365Suite.

Thiserrorcan occur due to lack of access to the license, or it can be a temporary issue that will resolve by itself. In this article, we take a look at the best solutions to fix thiserroronce and for all.

How can I fix we couldn’t find your Office 365 mailbox error?

1. Restart your PC

If you recently installedMicrosoft Officeand didn’t restart your PC, it is recommended to restart your PC soon after the installation regardless whether the program asks you to perform a reboot.

Restarting your PC usually applies any pending changes and it can sometimes fixSomething went wrong A mailbox couldn’t be found for Office 365error.

2. Wait for 48 hours

The newemail addressmay take some time to work properly mainly due to network or licensing issues.

You can wait for 48 hours and see if theerroris resolved by itself. If not, contact your university admin and let them know about the issue.

3. Check for Online Exchange License

If you’ve got a newOffice 365account with an Office license, it is important to know if the admin has been assigned the Exchange Online License to your account.

If the user has not assigned the required license, you may faceSomething went wrong A mailbox couldn’t be found for Office365 error. Contact the admin or anyone in charge and check if the required license has been assigned to your account.

4. Add an Alias

This is an official workaround suggested by Microsoft to fix the issue. The user has to add an alias to their Microsoft account and then use the alias to log in to Microsoft services.

If you already have an Alias, you can use it. If not, create a new Alias and associate it with youremail addressto accessOutlookaccount. Here is how to do it.

Now try to log in using your new alias on theOffice365 account and see if theerroris resolved.

TheSomething went wrong A mailbox couldn’t be found for Office365 errorcan be a temporary glitch at the Microsoft’s end or it can be caused by Online Exchange license assignment issue.

Follow the solutions in this article and you should be able to fix theerror.

A mailbox couldn’t be found for Office 365 [Fix]#

How can I fix we couldn’t find your Office 365 mailbox error?#

1. Restart your PC#

2. Wait for 48 hours#

3. Check for Online Exchange License#

4. Add an Alias#