CIS updates disappear every 2-3 days


Every day or two, CIS on my windows 7 platform shows as ‘last update’ 14 days ago, even though I watched it update only a day before!
So the updates almost constantly disappear. Anyone knows what this issue is about?

Clean temp folder and remove any b00XXXXX.cav file in scanners folder located in the CIS installation directory. Also make sure you’re not running any other security software that could be interfering with updates.