"Object is locked skipped
" or "Access Denied"
notations in an anti-virus/anti-malware scan are normal. Some files are permanently locked by the operating system or locked by running programs during use for protection, so scanners cannot access them. Files that are located in password-protected archives may also be locked or denied access. When the scanner finds such a file, it makes a note and then just skips to the next one. That explains why it shows as "skipped"
or "Access Denied"
in some anti-virus or anti-malware log scan reports. These skipped detections are seldom malware related so there is no need for concern.
It is also not unusual for an anti-virus or anti-malware scanner to be suspicious of or encounter problems with some compressed
files because they have difficulty reading what is inside them. These kind of files often are resistant to scanning (difficult to read) and they may even be ignored (skipped). This resistance may also result in some scanning engines to stall (hang) on these particular types of files.