For the last few days, My AVG free antivirus is failing to update with the wierd reason. Today, I thought of finding the solution for it, and dropped the search text as the error message and clicked "I'm Feeling Lucky". the first result that pops out.. is from winhelponline blog http://www.winhelponline.com/blog/error-invalid-update-control-ctf-file-when-updating-avg-anti-virus-80/ The above page states the solution to the issues as delete two *.ctf files in some update directory of AVG installation. Not only that, in that blog, the author Ramesh Srinivasan, has provided a VB script to delete the file by running a vb script. That's a very good one. I downloaded the vbscript and run it(after going thru the vbscript) to delete the two ctf files. Immediately after running the vbscript, I tried the AVG update, it updates flawlessly. Thanks to Ramesh Srinivasan. Thats solves the AVG issue. Disclaimer:- "Always Check and then Use the vbscript downloaded from Internet,
as simple as that...