1

Avast used to block my internet connection every time I started my computer but a repair(and a restart when it asked for it) fixed it until the next time I turned my computer off. It was like this for a couple of months but I decided not to to anything about it, I just sent my computer to sleep instead of turning it off…

Four days ago however I had to turn it off and now Avast is blocking all internet access to my computer. It doesn’t even show me that I have the option to connect to the internet and I use an Ethernet cable. Repair doesn’t work anymore and I had to uninstall Avast in order to get internet connection back.

2
  • Which Avast…? (Free/Pro/IS/Premier)
  • Which version…?
  • OS…? (32/64 Bit…? - which SP/Build…?)
  • Other security related software installed…?
  • Which AV(s) did you use before Avast…?
3

Avast Internet Protection
Idk, the moment I install it it blocks the internet connection
Windows 7 Ultimate 64 bit version 6.1 build 7601
No other security software
I used Avast free, it was fine but when I upgraded it started causing problems (the internet was blocked until I repaired and now blocked completely)

4
  • Which Avast…? (Free/Pro/IS/Premier)
  • Which version…?
    Already performed a clean installation (including using avastclear) of the latest avast version with the off-line installer ?
5

Try turn off port scan

Avast UI → Protection → Firewall → Settings → Advanced → Uncheck “Enable automatic port scan detection”

Any change?

6

Security not protection, sorry

7

Avast IS version 17.3.2291 build 17.3.3443.0

8

nope

9

First, be sure to get rid of all remnants of your prior installed AV(s)…!!
→ https://www.avast.com/faq.php?article=AVKB11#artTitle

Then:

  1. Download Avast Internet Security: https://files.avast.com/iavs9x/avast_internet_security_setup_offline.exe
  2. Follow instructions: https://www.avast.com/uninstall-utility (Run this tool for all prior installed Avast versions…!!)
  3. Reinstall Avast with the downloaded installer from point 1.
  4. Reboot.
10

Ok, thank you!! I will try that and reply.

11

OK, report back.

12

Doesn’t work :cry:

13

Follow instructions: https://www.avast.com/faq.php?article=AVKB33#artTitle