Fix: One or more folders in your mailbox is named incorrectly

By: Madeleine Dean
2 minute read

For various PC problems, we recommend this tool.

This software will repair common computer errors, protect you from file loss, malware, hardware failure and optimize your PC for maximum performance. Fix PC issues now in 3 easy steps:

  1. Download this PC Repair Tool rated "Excellent" on TrustPilot.com.
  2. Click “Start Scan” to find Windows issues that could be causing PC problems.
  3. Click “Repair All” to fix all issues with Patended Technologies (requires upgrade).

Microsoft Outlook is a reliable email platform, but sometimes users encounter annoying or even blocking errors when trying to access their mailbox.

One such error is the one that informs users their mailbox folders are named incorrectly:

The name of one or more of your folders includes the character “/” or more than 250 characters. Folders with names that include this character can’t be downloaded to your IMAP e-mail program. Please rename these folders [name of the folder].

It is worth mentioning that this error often invokes Calendar folders, therefore don’t forget to also check these folders when troubleshooting.

Here’s how to fix this error:

  1. Delete the folders mentioned by the error message (look for them in the Calendar tab and in the mailbox folders).
  2. Empty the Trash folder.
  3. If the issue hasn’t been fixed after performing the actions mentioned at steps 1 & 2, create a new Outlook profile.

As simplistic as this solution may first seem, users confirmed it worked.

This looks to have worked…  Thanks for your help.  The bit that worked was emptying the Trash folder

Speaking of Outlook issues, there is an interesting tool out there that promises to fix a series of Outlook and Office issues. The Microsoft Support and Recovery Assistant tool can both fix issues or share information on how to manually perform a fix yourself.


For various PC problems, we recommend this tool.

This software will repair common computer errors, protect you from file loss, malware, hardware failure and optimize your PC for maximum performance. Fix PC issues now in 3 easy steps:

  1. Download this PC Repair Tool rated "Excellent" on TrustPilot.com.
  2. Click “Start Scan” to find Windows issues that could be causing PC problems.
  3. Click “Repair All” to fix all issues with Patended Technologies (requires upgrade).

Here’s a full list of the issue this tool can fix:

  • Outlook stops responding
  • Outlook keeps asking for my password
  • Outlook keeps saying “Trying to connect…” or “Disconnected”
  • Can’t receive emails
  • Shared mailboxes or shared calendars don’t work.
  • I can’t sync my email
  • Email app keeps asking for my password
  • I can’t activate Office
  • I need help setting up my Office 365 email in Outlook
  • I can’t sign in
  • I can’t find Outlook on the web
  • I can’t install, connect, or enable CRM for Outlook

If you’re still having issues on your PC or you simply want to avoid them for the future, we recommend you to download this tool to scan and fix various PC problems, such as errors,  file loss, malware and hardware failure.

If you encounter other Outlook issues, check out the fix articles below:

For various PC problems, we recommend this tool.

This software will repair common computer errors, protect you from file loss, malware, hardware failure and optimize your PC for maximum performance. Fix PC issues now in 3 easy steps:

  1. Download this PC Repair Tool rated "Excellent" on TrustPilot.com.
  2. Click “Start Scan” to find Windows issues that could be causing PC problems.
  3. Click “Repair All” to fix all issues with Patended Technologies (requires upgrade).

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