Why didn't AVG prevent the ICE ransomeware from locking down my computer?

Jim, No AV product is capable of providing you with 100% protection although AVG are always working 24/7.
Have a look @ these 2 articles…
[1] (https://support.avg.com/SupportArticleView?urlname=What-to-do-when-I-suspect-an-undetected-file-is-infected
[2] (https://support.avg.com/SupportArticleView?urlname=Why-AVG-did-not-detect-a-virus
AVG Guru

ICE ransomeware tooks over my computer.  It took three days and a different product to remove it.  Why didn't AVG Internet Security prevent this from happening?

Jim, No AV product is capable of providing you with 100% protection although AVG are always working 24/7.
Have a look @ these 2 articles..
[1] (https://support.avg.com/SupportArticleView?urlname=What-to-do-when-I-suspect-an-undetected-file-is-infected
[2] (https://support.avg.com/SupportArticleView?urlname=Why-AVG-did-not-detect-a-virus
AVG Guru