Avast freezes during full system scan

[nomfaux]

Hello,

I was having this issue with the free version so I uninstalled three times with the same issue. So now I have upgraded to Pro and the issue continues.

 Whenever I try a full scan, Avast begins scanning normally, proceeds testing files and folders for about a minute and then stops. it wont scan past 1%. It freezes at a certain point and does not scan any further. This is even after I tried updating to the latest version and definitions.

 Right now, the scan has stopped with the "Processing file" indicator showing "SVC: .NET CLR Data > ". On restarting the scan it stopped when processing something called "SVC: .NET Data Provider for Oracle > ". Previous times it happened when processing different things, but I noticed all of them start with the letters "SVC".

I just paid for an upgrade but I can't conduct a complete scan on my system. Would a virus cause this? As I stated I had Avast Free version which stated i was free of viruses but I can not complete a full scan.

Please help. Thanks! 

[Alikhan]

A repair fixed this issue for me last time...

Control Panel>Program and Features>Uninstall a Program>Avast>Uninstall/Change>Repair>next>follow instructions then reboot (IMPORTANT)

[nomfaux]

Thanks, I will try with this Pro version. I did this several times with Free with no success. Thanks for the reply!

[Alikhan]

Thanks, I will try with this Pro version. I did this several times with Free with no success. Thanks for the reply!

If you've tried it several times and it didn't work, it could be a corrupt install...

I'd recommend a clean install:

1. Download Avastclear, Rejzors uninstall tool and the appropriate Avast program edition

Note: You need to be ONLINE during this install (online installer works in all cases whereas offline sometimes doesn't)

http://files.avast.com/iavs9x/avast_free_antivirus_setup_online.exe
http://files.avast.com/iavs9x/avast_pro_antivirus_setup_online.exe
http://files.avast.com/iavs9x/avast_internet_security_setup_online.exe
http://files.avast.com/iavs9x/avast_premier_antivirus_setup_online.exe

Avastclear : http://files.avast.com/iavs9x/avastclear.exe
Rejzors Uninstall tool: http://rejzor.wordpress.com/avast-cleanup-tool/

2. Uninstall Avast by control panel  [If you don't have Avast in control Panel go to #4]
3. Uninstall in safe mode using Avastclear.
4. Run Rejzors Uninstall Utility in Normal Mode (removes traces avastclear doesn't) - reboot.
Check : Once uninstalled check in device manager>view>show hidden devices if there is anything related to avast with a yellow triangle.. if so, uninstall it and reboot.
5. Install the version you downloaded.
6. Reboot.
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[Rodthebot]

Well, I've got the same issue, even after all the procedures recommended by the Avast! gurus It didn't worked so I realised that my HD had some issues, I've backup all my files and performed a Scandisk... When back to the Avast! it worked fine!!!