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Hi @Germann Pessidjo ,
Welcome to Microsoft Q&A!
Do you mean that the Visual Studio Installer can’t be opened? Or the Visual Studio can’t be launched via Visual Studio Installer?
If the Visual Studio Installer can’t be opened, please try to delete the folder: C:\Program Files (x86)\Microsoft Visual Studio\Installer. Then, re-download the bootstrapper file from the following Microsoft Site and run it as administrator.
https://visualstudio.microsoft.com/downloads/
If the Visual Studio IDE can’t be launched, please try to restart your computer, and run it as administrator from start menu. Meanwhile, you can check if the Visual Studio process is displayed in task manager or not.
By the way, if you have anti-virus software, please temporarily disable them.
Sincerely,
Anna
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