AVG Blocking files

AVG has locked the the site of the school and hence I am not able to open this site in my laptop. Also,  AVG has blocked a PDF file due to virus threat however, the same file is transferred from my mobile to laptop and it is a safe file.

Hello Mihir,

I am sorry to know that.
Please disable AVG Internet Security Unlimited program temporarily by following the steps as mentioned in this article: http://support.avg.com/SupportArticleView?urlname=How-to-use-Passive-Mode and check whether you able to access the website.
Please provide the screenshot of the threat detection window that appeared for PDF file which will help us to assist better.
You can post the screenshot here in your topic. Click on 'Answer' & then click on the 'Image' [mountain symbol] & follow the instructions.
We request you to perform repair of AVG Protection program once as mentioned in this article: http://avgread.me/1BVxDSY .