Error While Scanning was complete

“Some files could not be scanned”

C:/Users/compaq/SkyDrive:ms- properties Error:file is offline-it is currently unavailable
C:/Users/compaq/SkyDrive/Documents:ms-properties Error:file is offline-it is currently not unavailable

The answer is written there in front of you ( Error:file is offline-it is currently unavailable )

do these files pose a threat?

No

"Some files could not be scanned"

How do I handle files that avast! can’t scan? https://blog.avast.com/2014/02/28/how-do-i-handle-files-that-avast-cant-scan/

if you need to check suspicious files www.virustotal.com / www.metascan-online.com