"The parameter is incorrect" at startup after 16.2.0.7 upgrade

Hello

 

After my laptop was upgraded last night (without my knowledge) to version 16.2.0.7, I'm now getting "The parameter is incorrect" on the "C:\Program files\Norton Internet Security\Engine\16.2.0.7\uiStud.exe".

 

In my EventViewer I'm getting a lot of error messages, but there are two messages that are repeated:

SRTSP - Event ID 5:

Error loading Symantec real time Anti-Virus driver.

 

Service Control Manager - Event ID 7000:  

The Symantec Real Time Storage Protection service failed to start due to the following error:

Cannot create a file when that file already exists.

 

Can someone please help me...