"Object is locked skipped
", "File locked
", "Locked file. Not tested
", "Access Denied
", "Some files could not be scanned
", "file could not be opened
", "Error Opening
", "Password Protected
" or "Encrypted
" notations in an anti-virus/anti-malware scan are not uncommon. Some files and services are locked by the operating system
or running programs during use for protection
, so scanners cannot access them. Other legitimate files, especially those used by security programs, may be obfuscated
or password protected
in order to conceal itself so they do not allow access as a protective measure. When the scanner finds such an object, it makes a note and then just skips to the next one. That explains why it may show with such notations but no action taken in certain anti-virus or anti-malware log scan reports. These are normal when using many security scanning programs so there is seldom a need for concern.Note: It is not unusual for an anti-virus or anti-malware scanner to have problems with or be suspicious of compressed, archived, .cab, .rar, .jar, .iso, and packed files because they have difficulty reading what is inside them. These kind of files often trigger alerts by security software using heuristic detection because they are resistant to scanning (difficult to read). This resistance may also result in some scanners to stall (hang) on these particular types of files or just ignore (skip) them.
When in doubt, you can report them to the anti-virus/anti-malware vendor so they can investigate, or get a second opinion by submitting (upload) to an online file analysis service or performing an online scan.