AVG8 Free Update Failed: Invalid CTF File!

When i’m try to update my AVG8 Free, I got error message: Invalid Update Control CTF File

Even if I tried to update again, I still got the error message, so I tried to search Google and found the solution from here:

The Solution:

  1. Go to C:Documents and SettingsAll UsersApplication Dataavg8updatedownload or search *.ctf from the start menu > search
  2. Delete avginfoavi.ctf and avginfowin.ctf
  3. Try to update again, it should be OK

That’s all.

Update AVG8 Free Failed! and the fix.

When I’m trying to update my antivirus yesterday, AVG8 Free, I got an error message right after AVG8  update download finished. It say: there is missing .bin files! I try to update again and still got the error. I think this is from the server. Today I try to update it again and still no fix.

Then I try to search the error cause and maybe some fix. I got it! There is 2 way, both are from yahoo answer:

1) go to http://www.grisoft.com/ww.download-update
2) make a directory on your desktop called AVG
3) download AVI: 270.6.4
4) download IAVI: / 1616
5) move the downloaded files to the directory you made called AVG
6) launch AVG
7) select tools -> update from directory
8) select the directory called AVG where you put the downloads


1. Open AVG user interface
2. Select tools > update from directory
3. Navigate to the original install directory (typically c:/program files/AVG/AVG8) and hit OK

I’ve tried the second one (because my net is slow…), and the error is gone!