Upgraded a few Macs to Sierra today. No issues with the upgrade itself that I noticed. It looked smooth enough.
After logging in on a domain account and going through Apple's security prompts at the beginning, there's an extra message on a few machines....
"The system extension 'SymInternetSecurity.kext' is not compatible with this version of OS X and can't be used.
Please contact the developer for updated software."
I can get live updates fine still.
SEP version on that mac is...
12.1.6867.6400
Is that error message a security concern at all?
Dang. Yep.... From the Symantec Solutions folder in Applications, I can run Liveupdate fine. SmallScanner (not sure what that is) will start/appears in the dock but doesn't do anything. Symantec Endpoint Protection just hops a few times in the dock but doesn't actually come up.
Is this fixable? We need a fix for Anniversary Edition on Win10 and then Sierra.....