I’m attempting to disable Avast services through Msconfig.
I need to disable all services running on my system in order to figure out which services are causing my Windows update to fail. I’ve been able to disable all services exept for Avast services.
Do I have to uninstall Avast in order to stop those two services?
Best regards,
Mikael
Although is NEVER adviced to do that, you can disable avast! services within the avast! tray icon settings (shields management).
avast! shouldn’t interfere in any (clean) installation, even less Windows Update.
Which is the error (number/info) you’re facing?
The errorcode I get from Windows Update is “800F081F”.
All update downloads fails and I get the mentioned code.
I’ve been in contact with Microsoft and they gave me the advice to turn off all non-essential services and try to run Windows update then.
have you tried right click avast tray icon and pause shields for xx time
googling the error code i found this…but i guess you already know if you have contacted microsoft
0x800F081F CBS_E_SOURCE_MISSING The source for the package or file not found.http://support.microsoft.com/kb/947821
Hello again,
Yes, I have stopped the shields entirely for the moment, what I want to do is stop the Avast Services in the MsConfig
http://imgur.com/1q2tUO9
see picture IV disabling self protection…on your risk
https://support.avast.com/index.php?_m=knowledgebase&_a=viewarticle&kbarticleid=1334
Pondus:
Thank you, I will check the guide you linked me to on Microsoft!
Will get back to you here regardless if it worked or not! 
if you dont get it to work, you can attach a OTL diagnostic log here…
the one of the expert will have a look inside and see if he find something strange. 
you find OTL here. http://forum.avast.com/index.php?topic=53253.0
You’ve also never mentioned which OS you’ re using.
Oh, pardon me! Completely forgot that!
I’m running Windows 8.
Pondus: I managed to stop the selfdefence and halt the Avast! services, unfortunally it did not help me solve my problem.
Now I’ll try contacting Microsoft again and tell them their product aint working
The answer supplied by Pondus sends you to the right place for the fix of this error.
Is this an upgrade of windows 7 to windows 8 or a fresh install ?
http://m1p.net/windows-8-update/can’t-do-any-windows-8-update-error-code-800f081f/
Solution to Avast question was supplied by Pondus.
Solution to Update problem found below.
Was in contact with Microsoft.
The solution was to create a batch-file out of the following code (I simply named it fix.bat):
SET ARG=%1
FOR /F “usebackq delims=” %%A IN (dir /B C:\Windows\servicing\packages\Package_for_%ARG%~*.cat) do SET FOUNDPKG=%%A
SET PKGNAME=%FOUNDPKG:~0,-4%
DISM /online /NoRestart /remove-package /packagename:%PKGNAME%
Then open CMD and do
cd %userprofile%
cd desktop%
fix KB1234567
When that’s done, download the update and install it
That’s basically what’s outlined in the link that essexboy supplied. Only they did it manually.