Err_connection_closed

Hello Guido,
You've reached the AVG community support forum.
We regret the inconvenience this has caused you. We'll certainly look into this and help you. I understand that you are experiencing difficulties accessing websites in Google chrome browser, but have no issues with using all websites in AVG Secure browser. Please disable the AVG Internet Security and try to access the websites in Google Chrome. To disable the AVG Internet Security please click on the below link :

Temporarily disabling AVG AntiVirus protection

Let us know if the issue persists or not after disabling the AVG Internet Security.

Awaiting your response. 

Hello Guido,
You've reached the AVG community support forum.
We regret the inconvenience this has caused you. We'll certainly look into this and help you. I understand that you are experiencing difficulties accessing websites in Google chrome browser, but have no issues with using all websites in AVG Secure browser. Please disable the AVG Internet Security and try to access the websites in Google Chrome. To disable the AVG Internet Security please click on the below link :

Temporarily disabling AVG AntiVirus protection

Let us know if the issue persists or not after disabling the AVG Internet Security.

Awaiting your response. 

'ERR_connection_closed'  on pc with chrome browser. Some of the url works and some not? 
PC have windows10. All the sites works with 'AVG secure browser'.
Fault had started since i changed my security from bitdefender to AVG.
What is the problem???