Hi,
Do you mean that you can't open your Outlook client?
Are you clicking on the desktop icon?
Please try opening your Outlook via clicking the icon in the start menu.
And it is also suggested to open your Outlook via press "Win + R" then type "Outlook" and click Enter.
If you are still unable to open your Outlook client, please press "Win + R" then type "Outlook /safe" and click Enter.
Hope this can be helpful.
Regards,
Aidan Wang
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