Outlook (Classic) error

Guruprasad N 20 Reputation points
2026-01-29T11:55:52.46+00:00

I am unable to access Outlook. Its throws out an error like this, we re sorryoutlook ran into an error which is preventing to work correctly. Outlook has to be closed as a result. Would you like to repair now ?

OS : Windows 11

Outlook ( classic)

Outlook | Windows | Classic Outlook for Windows | For business
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Answer accepted by question author
Kudos-Ng 15,060 Reputation points Microsoft External Staff Moderator
2026-01-29T12:40:14.3333333+00:00

Hi Guruprasad N,

Thank you for posting your question in the Microsoft Q&A forum. 

In addition to the troubleshooting steps Q&A Assist already suggested, I want to share one more data point that may fit your scenario. Your symptoms could be related to a previously known issue affecting POP accounts in Classic Outlook after installing a recent Windows update. Microsoft has published an advisory regarding this situation, which you can review here: https://support.microsoft.com/en-us/office/classic-outlook-profiles-with-pop-accounts-and-psts-hang-after-windows-updates-on-january-13-2026-590fe356-ecc2-49f4-b9e3-bd39fafa58f6

According to Microsoft’s documentation, this issue has already been addressed in newer Windows update builds: https://support.microsoft.com/en-us/topic/january-24-2026-kb5078127-os-builds-26200-7628-and-26100-7628-out-of-band-cf5777f6-bb4e-4adb-b9cd-2b64df577491

Please check your current Windows version and install the latest updates, if available. The fix may already be included in newer builds.

If you are already on the latest build and the issue persists, you may consider Removing KB5074109 as a temporary workaround:

  • Open Settings > Windows Update
  • Select Update history
  • Scroll down and choose Uninstall updates
  • Locate KB5074109
  • Click Uninstall, then restart your computer User image

Note: Uninstalling updates may temporarily reduce your device’s security posture. If your device is managed by an organization, please coordinate with your IT administrator before proceeding.

If Outlook stabilizes after uninstalling the update, you may want to prevent the update from reinstalling while Microsoft continues to investigate. Microsoft provides official guidance for temporarily pausing Windows Update: https://support.microsoft.com/en-us/windows/pause-updates-in-windows-643e9ea7-3cf6-7da6-a25c-95d4f7f099fe

Because security updates are important, I recommend using Pause updates only as a temporary workaround. Once a fixed update is available, please re‑enable updates and install the latest patches.

If, after considering the security implications, you still want to stop Windows Update more broadly, you can review this third‑party article for methods to disable updates. Note that these are not Microsoft‑recommended approaches and may reduce your device’s security posture: https://windowsreport.com/disable-windows-11-update/

Note: Microsoft is providing this information as a convenience to you. These sites are not controlled by Microsoft, and Microsoft cannot make any representations regarding the quality, safety, or suitability of any software or information found there. Please ensure that you fully understand the risks before using any suggestions from the above link.

If your device is managed by an organization, local settings may be overridden by your IT policies, please coordinate with your IT admin as needed.

I hope this helps.

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  1. AI answer

    2026-01-29T11:56:01.2833333+00:00

    If you're encountering an error in Outlook Classic that states it ran into a problem preventing it from working correctly, you can try the following steps to resolve the issue:

    1. Repair Office Programs: You can automatically repair your Office program files. To do this:
      • Exit any Microsoft Office programs that are running.
      • Open Control Panel, then go to Programs and Features.
      • In the list of installed programs, right-click on Microsoft Office and select Repair.
    2. Check for Updates: Ensure that you have the latest updates installed for Outlook. Sometimes, issues can arise from outdated software.
    3. Run the Inbox Repair Tool: If the error persists, you can use the Inbox Repair Tool (scanpst.exe) to repair your Outlook data files. To do this, exit Outlook and follow the steps in the documentation for repairing Outlook data files.
    4. Check for Conflicts: Ensure that no other programs or add-ins are conflicting with Outlook. You may need to disable any add-ins that are not essential.
    5. Create a New User Profile: If your user profile is corrupted, creating a new profile might help resolve the issue.

    If these steps do not resolve the issue, you may need to consider additional troubleshooting steps or consult Microsoft support for further assistance.

    References:

    AI-generated content may be incorrect. Read our transparency notes for more information.

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