Government Gateway blocked

Hello Leigh,
Please disable AVG Internet Security unlimited as mentioned in this article ( http://support.avg.com/SupportArticleView?urlname=How-to-use-Passive-Mode ) and check if it works.
Thank you.

I need to send a report to HMRC via the government gateway but I am getting a message that "Connection to the Government Gateway is being blocked by some other software (e.g. a firewall)."

Any suggestions as to what I need to turn off?

Hello Leigh,
Please disable AVG Internet Security unlimited as mentioned in this article ( http://support.avg.com/SupportArticleView?urlname=How-to-use-Passive-Mode ) and check if it works.
Thank you.