Not detecting internet connection

Hello Gábor,
Thank you for contacting AVG Community support.
We will surely help you with your issue.
Please let us know if you are able to connect to internet from other devices.
Select a different AVG server location and check if you are able to connect to internet.

Please disable the AVG Internet Security program to check if the issue is getting resolved.
Disable AVG Internet Security (https://support.avg.com/SupportArticleView?l=en&urlName=Disable-AVG-Antivirus&q=disable&supportType=home).

Keeps us updated.

Hello Gábor,
Thank you for contacting AVG Community support.
We will surely help you with your issue.
Please let us know if you are able to connect to internet from other devices.
Select a different AVG server location and check if you are able to connect to internet.

Please disable the AVG Internet Security program to check if the issue is getting resolved.
Disable AVG Internet Security (https://support.avg.com/SupportArticleView?l=en&urlName=Disable-AVG-Antivirus&q=disable&supportType=home).

Keeps us updated.

After the last AVG Internet Security update the VPN consequently says "You have no internet connection".

Thank you for updating the status, Gabor.
We're glad to know that the issue has been fixed.
For further queries or need assistance, feel free to contact us.
Have a great day, stay safe!

Thanks! I have solved the problem. Somehow the Internet Security when had been updated  put a lot of programs and services into the "blocked from the internet" list among them the Secure VPN. After unblocking it it works perfectly.
Gábor