can't open outlook

Question

I need help with case case # [Moderator Note: Personal Info Removed]. I can't open outlook and I have Microsoft 365.

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Moved to Outlook | Windows | Classic Outlook for Windows | For business

Answer 1

Hi Mark T Warga Sr

Please note that our forum is a public platform, and we will modify your question to hide your personal information in the description. Kindly ensure that you hide any personal or organizational information the next time you post an error or other details to protect personal data.

I’m sorry to hear that you’re unable to open Outlook, especially since you already have a Microsoft 365 subscription and an existing support case.

Please try opening Outlook in Safe Mode:

• Press Windows + R.
• Type Outlook.exe /safe and select OK.
• If Outlook opens successfully, go to File > Options > Add-ins.
• Under Manage, select COM Add-ins, then click Go.
• Clear the check boxes for any enabled add-ins, click OK, and restart Outlook normally.

You can also run the Microsoft troubleshooting guidance for Classic Outlook startup issues on Windows.

While the issue is being investigated, you may be able to access your mailbox through Outlook on the web: Outlook on the web

Please note that this is a user-to-user support forum. We do not have access to Microsoft’s internal support systems and cannot check or update the status of your support case.

To continue following up on your case, please contact Microsoft Support through: https://support.microsoft.com/contactus

Sign in with the affected account and provide your support case number so the support team can review the latest status and assist you further.

Please let us know the outcome after trying the steps above. We will be happy to help further if needed.

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