Hi, and thanks for reaching out. My name is Bernard a Windows fan like you. I'll be happy to help you out today.
I understand the issue you have, nothing to worry I am here to help, this is happening when there is a corrupted file on the Windows Defender folder or a reconfiguration is needed, First, you need to check if you have a work or school account:
Open Settings> Click Accounts> Click Access work or school then disconnect the account there, if no account or already disconnected and you have the same issue follow the steps below:
Method 1. Repair Windows apps and Windows Defender:
On Powershell(admin), copy and paste the command below and hit enter:
Get-AppXPackage | Foreach {Add-AppxPackage -DisableDevelopmentMode -Register "$($_.InstallLocation)\AppXManifest.xml"}
restart the PC and check
Method 2. Reinstall Windows Defender
Open the registry, then go to
Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender
Then delete the Windows Defender folder, restart the PC, and recheck it.
If none will work from the above solution, I suggest doing an in-place upgrade wherein it will upgrade the device to the latest version and repair all issues without deleting any files.
Kindly follow the steps from this link:
https://answers.microsoft.com/en-us/windows/for...
Let me know how it goes and I hope that helps.
Bernard