Avast Antivirus Free allows inputting nonexistent paths and urls in Exclusions

Avast Free Antivirus / Premium Security
1

OS: Win 8.1

Avast
version: 12.3.2280
build 12.3.3154.6
virus def: 160919-1

See screenshots.

2

Perform a repair of avast.
If that doesn’t solve it perform a clean installation of avast.

3

Repair Avast:
Control Panel> Program and Features (Add/remove program)>Select Avast> Select Repair. Reboot when completed
https://www.avast.com/faq.php?article=AVKB204
If Repair doesn’t fix the problem, try the following:
Clean Install of Avast:
https://goo.gl/4Ptzkf

4

The list of exclusions are masks, possibly including wildcards (that are later matched against the true paths) - so there isn’t anything wrong about being able to enter a non-existent path. Plus if the path is non existent now, it doesn’t mean it cannot be created later. Now of course if they don’t make any sense because they contain characters a path cannot, they won’t ever match… but I don’t think there needs to be any special validation (the invalid mask just won’t do anything).