I had avast 2014.9.0.2011 causing high CPU usage lately after a long working in Firefox.
The high CPU usage won’t come down even if I turned off all the shields.
I have removed the program from control panel and then booted to safe mode and used the avast cleaner utility then installed the program again still the problem exists.
So I removed it and went back to the previous version 2014.9.0.2008 which till now there is no problem.
So what is problem exactly with the new version and how can I fix it?
This issue has been reported in several different threads for 9.0.2011.
Considering the change log entries, there are several suspects (posted on Filehorse.com)…
What’s new in this version:
Finally fully rewritten the WebShield so that it now doesn’t work as a “transparent proxy” anymore. I.e. no more routing of all HTTP traffic through the AvastSvc.exe process - which should hopefully result in no more conflicts with various firewalls (especially older firewalls that can’t handle transparent proxies) and overall improvement in stability and performance. Besides that (and this is really exciting) it allows us to see and detect more threats (the original webshield had some limitations).
The Firewall component (in IS and Premier) has also changed dramatically. Made it more compatible with other applications, such as Java and various VPN services.
The installer/updater has been improved to allow more reliable installation in case of infected machines. The installer is now protected by the avast self-defense driver from the very beginning, making it harder for active malware to kill it (if you have problems starting the installer in the first place, it may be a good idea to try to rename the executable to a random name first)
The changes in the File System Shield’s driver should result in faster performance, especially in the copy files and install programs scenarios.
We have also beefed up the Browser Cleanup tool to be able to rip off even the more stubborn toolbars and other “PUBEs” (Pontentially Unwanted Browser Extensions
Also fixed a whole bunch of bugs reported in the last couple of months. Especially if you encountered a problem with R1, try this new version, chances are that the problem is resolved there.
I don’t why it worked for me but I decided to give the 9.0.2011 version a second chance so I removed the 9.0.2008 from the control panel, used the avast
cleaner, used the RejZoR’s cleanup tool, did some registry cleaning with third party tools and installed the avast 9.0.2011 version.
And till now there is no high CPU usage whatsoever.
I have tried all “fixes” in this thread but Avastsvc.exe is still using 90% cpu and generating GBs of temp files. This problem can be found on seaches dating back to early December 2013 with thousands of reads. It is an Avast problem that needs to be addressed, please!
Asyn, Thank you for the quick response. I have downloaded and install the beta version you suggested. I’ll monitor for awhile and let you know if the problem is resolved. Thanks again
Asyn,
Have been running the beta version you recommended for over 24 hours now with heavy internet traffic. Avastsvc.exe has not hung the computer one time. It is back to :)only consuming < 1% of cpu. Thank you for solving this problem for me.
Jim
Clear Cache/Temp Files
Download TFC by OldTimer to your desktop
[*] Please double-click TFC.exe to run it. (Note: If you are running on Vista, right-click on the file and choose Run As Administrator).
[*]It will close all programs when run, so make sure you have saved all your work before you begin.
[*]Click the Start button to begin the process. Depending on how often you clean temp files, execution time should be anywhere from a few seconds to a minute or two. Let it run uninterrupted to completion.
[*]Once it’s finished it should reboot your machine. If it does not, please manually reboot the machine yourself to ensure a complete clean.
