Hi Gary, my name is Max and I'm an independent advisor.
I suppose this issue is due to malware, out-dated or corrupted system files. I recommend that you follow the methods below one by one and check if it helps.
Search for the latest Windows 10 updates.
Go to the Start, Settings, Update & Security, Windows Update, select Check for updates.
Please refer to this article for further information: Windows Update: FAQ. https://support.microsoft.com/en-us/help/12373/...
Next option is to refer to this article to run Microsoft Safety Scanner
https://docs.microsoft.com/en-us/windows/securi...
Next option is to try running SFC /scannow to repair system files.
Check if the system files are corrupted by running System File Checker in Windows 10 https://support.microsoft.com/en-us/help/402652...