Microsoft Outlook uninstalled at rebuild and error when reinstalling?

My dad has rebuilt his notebook and then was the newly acquired Outlook awake 2 months ago. It is still under All Programs, but it does not open. Also, I can't reinstall it because it then writes that the product has already been used. Under the specified hotline of Microsoft 0800 8088014 I can't reach any, it does not even ring and then put it back on automatically. Can anyone help me?

Go back to the recovery time? Restore Backup?

Business hours of Microsoft Store support:

Monday-Friday: 09:00 - 21:00, Saturday-Sunday: 10:00 - 18:00

Is the "newly acquired Outlook" a real license, or just a product key from any webshop?

If he has reset his notebook and Outlook is installed, then he has already installed Outlook.

If you think that it is due to the installation, then you could try to uninstall Outlook and then reinstall.

If he has not set up the notebook but "reset" has, then you should first make sure that all patches and updates for Windows and Office are recorded.

The phone number for product activation by phone in Germany is:

0800 / 2848-283

Call and follow the instructions.

For details, see https://support.office.com/de-de/article/fehler-beim-aktivieren-von-office-die-telefonische-aktivierung-wird-f%C3%BCr-dieses-produkt-nicht-mehr-unterst%C3%BCtzt-9b016cd2-0811-4cb3-b896-5a6a13177713

I've called Microsoft more than 10 times but I have the same problem over and over again and mostly I did that between 11am and 1pm but the number does not seem to work. I bought, paid for and downloaded the license for Outlook from Microsoft. I can't uninstall or install.

Is that also valid for Austria? Am from Austria.

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