Alright. Next step:
Can you try this: In Windows Search, type in PowerShell, right-click on it, and then choose Run as administrator. Run:
Get-AppxPackage *Microsoft.AAD.BrokerPlugin* | Reset-AppxPackage
Also in an elevated CMD the following:
RunDll32.exe InetCpl.cpl,ResetIEtoDefaults
#2:
Press Windows + R, type %localappdata%\Microsoft, and press Enter.
Delete the folder named OneAuth.
Good luck!