since installing avast, cannot connect to internet

[REDACTED]

i tried to turn firewall on but message says I'm not connected to internet but my computer shows I am connected.  Cannot use internet explorer.

[Eddy]

What OS/SP ?
What exact avast version ?
Do you have other security (related) software installed ? (or did you)

[DavidR]

What is your operating system and firewall ?

What avast version are you using, avast free/pro/internet security/Premier ?
What is the build number, avast 2015.10.2.2215 being the latest.

Have (or did) you another Anti-Virus installed in this system, if so what was it and how did you get rid of it ?

[REDACTED]

avast premier, 2015 had free avast

[Asyn]

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

Then:
1. Download Avast Premier Antivirus: https://files.avast.com/iavs9x/avast_premier_antivirus_setup.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.

[REDACTED]

Windows 7, Avast premier 2015, had free avast

[REDACTED]

will try your suggestions

[Asyn]

OK, report back.

[REDACTED]

Repair for Avast did it. Thanks for your help.

[Asyn]

You're welcome.