Thanks for the response. I receive periodic alerts telling me that the file can't be synched. When I go to Creative Cloud on my computer, I see a message saying "Some files failed to synch." Following the "Learn More" link, I'm presented with the following:
The "Get Help" link does not seem to provide information specific to this condition.
It looks like the last time the Data1.cab file was updated was 8/24/17. As I mentioned, the virus checks suggest this file is OK.