1. #1

    Error In Updating Avast Antivirus saying invalid signature

    Avast says that there was an error updating. It said "invalid file signature, set up will terminate". Windows security updates failed also. I ran a full avast scan, malware bytes scan, anti super spyware scan, ccleaner, and defragment in safemode. What Should I Do??

  2. #2
    Mr.singh Array
    Join Date
    Aug 2013

    Re: Error In Updating Avast Antivirus saying invalid signature

    Mate, it is because the files of the antivirus have already become corrupted. So, instead of updating it, you should reinstall it completely after removing the previous version. Your problem will be definitely solved. Thankyou.

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