Thanks for your answers. It looks like I made it.
I made the following:
- System settings > apps > gaming services > advanced options.
Scroll down and click 1 Terminate > 2 repair > 3 reset. - Restart PC
- Check for Windows Update = None available.
- Search for “wsreset” in Windows Toolbar and Enter (Reset the MS Store)
- Restart PC
6.Try to reinstalled th FS2020, then I got the 0x80070424 error which is the accumulation of two 0x803fb107 errors (one for the Digital Ownership and the second for the game). - Deleted the downloads again in MS Store.
- Then I followed another post by :
start powershell as administrator, then type
Get-AppxPackage windowsstore | Remove-AppxPackage
Get-AppxPackage xboxapp | Remove-AppxPackage
Get-AppxPackage -AllUsers| Foreach {Add-AppxPackage -DisableDevelopmentMode -Register “$($_.InstallLocation)\AppXManifest.xml”}
7. Restart PC
8. Restart the Game-Download again.
9. Then Error 0x8007001F appears.
10. Deleted the downloads again in MS Store.
11. After that I read in a forum that maybe the anti virus firewall could be a problem with downloads in the MS Store. So I turned off the firewall.
12. Restart the Game-Download again.
And then, what a miracle, it worked! The FS2020 is now reinstalled and working.
Thank God they don’t do software updates of real aircraft 