Outlook won't open on my Windows 10 PC - have Microsoft 365 and do the Repair and restart but it doesn't work except occasionally if I "Run as administrator" it will open but then will stop working

Hi Duane,

Thanks for contacting us and sorry for the inconveniences,

Here are some possible solutions that you can try:

• Run Outlook in safe mode. This can help you troubleshoot if the problem is caused by an add-in or a customization that interferes with Outlook. To do this, press **Windows + R** to open the Run dialog box, type **outlook.exe /safe**, and press **Enter**. If Outlook opens, you can disable or remove the problematic add-in by going to **File** > **Options** > **Add-ins** > **Go**.
• Repair your Office installation. This can help you fix any corrupted or missing files that may prevent Outlook from opening or working. To do this, go to **Settings** > **Apps** > **Apps & features**, find and select **Microsoft 365**, and click on **Modify**. Then, choose **Quick Repair** or **Online Repair** and follow the instructions.
• Update your Outlook app and your Windows 10 system. This can help you resolve any bugs or compatibility issues that may cause Outlook to malfunction. To do this, go to **File** > **Office Account** > **Update Options** > **Update Now** in Outlook, and **Settings** > **Update & Security** > **Windows Update** > **Check for updates** in Windows 10.
• Create a new Outlook profile. This can help you reset your Outlook settings and preferences, and fix any issues with your account or data files. To do this, go to **Control Panel** > **Mail** > **Show Profiles**, click on **Add**, and follow the wizard to create a new profile. Then, set the new profile as the default one by selecting **Always use this profile** and choosing the new profile from the drop-down list.

Let me know if this helps or if you need further assistance.

Regards, Sola

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