I installed new flash player 10.3.183.10 because there were security and vulnerability problems.
When i want to scan my computer with avast internet security suite, avast explains me that the files are protected by a password (code 42056) an can’t be scanned. I want to know if it is a problem for my computer’s security.
thank you.
I have windows 7 64 bits SP1 with internet security suite with the last update.
No. 
avast can’t scan files that are password protected, it doesn’t know the password.
There are many legitimate reasons why a file was password protected. It’s really nothing to worry about - it’s normal.
By examining 1) the reason given by avast! for not being able to scan the files, 2) the location of the files, you can get an idea of what program they relate to. You may need to expand the column headings to see all the text.
Files that can’t be scanned are just that, not an indication they are suspicious/infected, just unable to be scanned.