microsoft outlook not opeaning

Dear Khilan Dadhaniya,

Based on your description, kindly try these steps:

1> Close Outlook completely

In Start Menu, open Task Manager.

Find Microsoft Outlook or OUTLOOK.EXE.

Select it, then click End task.

Try opening Outlook again.

2> Open Outlook in Safe Mode

Press Windows key + R > run: outlook.exe /safe

Safe Mode starts Outlook without add-ins. I can’t start Microsoft Outlook or receive the error “Cannot start Microsoft Outlook. Cannot open the Outlook Window” | Microsoft Support

If Outlook opens in Safe Mode

Disable the add-ins: Go to File > Options > Add-ins > COM Add-ins > Go

Take a screenshot or note which add-ins are enabled.

Clear all checkboxes and click OK.

Close Outlook and open it normally.

If it works, enable add-ins one at a time to identify the problematic one.

3> Create a new Outlook profile

Open Control Panel > Mail (Microsoft Outlook) > Show Profiles > Add

Enter a profile name such as Outlook-New.

Add the email account.

Select Prompt for a profile to be used.

Open Outlook and choose the new profile.

4> Repair Office apps

Please refer to this article to repair Office apps. Repair an Office application | Microsoft Support

I hope the information shared helps point you in the right direction.