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David MayDavid May 

Installation error code 0xc0070641

AVG2015 started General Failure in updating, AVG advised to remove/reinstall AVG2015,
now neither AVG2015 nor PC TuneUp will reinstall, keep getting Installation error code 0xC0070641
"event exec_finished "on both installations.
Ratheesh RamadevanRatheesh Ramadevan (Avast)
Hello David.
We regret for the inconvenience caused. I would kindly request you to follow the below instructions
1) First step is to use AVG Remover tool based on your operating system ( http://support.microsoft.com/en-us/kb/827218 ) and uninstall your AVG program completely. To download AVG Remover Tool please click on the following link: http://www.avg.com/us-en/utilities .
2) Run the downloaded tool and follow the instructions displayed on your screen.
3) Your computer will be restarted automatically. After the restart, AVG Remover will finish the uninstallation.
4) To install the program AVG Anti-Virus. Please have a look at this article: http://avgread.me/1DXPL5z .
Please have a look at this article to install AVG PC Tune Up: http://avgread.me/1ERJxSd
This should resolve your issue. Please let us know here your results. Thank you.
David MayDavid May
No luck at all, even after Kiran from your Support Center remotely tried to remove/reinstall AVG.
Seeing as how BOTH AVG and PC Tuneup failed to install with the SAME error code,
I figured it was Windows at fault. And what could cause an installation error in Windows ??
The Windows Installation Wizard, of course !! So I ran the WindowsXP Installation Wizard
(WindowsXP-KB942288-v3-x86.exe) and now I'm a happy camper again.
Both reinstalled OK....maybe this will help somebody else, too. 
You don't suppose that AVG would reward me with a free upgrade on both products, do you Ratheesh ??
-980888528-980888528 (Avast)
Hello David,
I know this could be disappointing and happy to know that your issue got fixed. Thank you for your valuable suggestions.Feel free to contact us for further assistance.
Thank you.
Braden FelicianoBraden Feliciano
Hi David May - - You dont have to uninstall you whole windows. Sometimes the system that we run in our Pc's claim to be x64 but some programs still find them to be x32. I have solved this problem for many people in our area that purchased the AVG and had the error code  
0xc0070641 Event exec_finished......

So how do you solve this? All you have to do is check your operating system if its x64 and try your install. If the installation fails, then try to run a x32 bit program of AVG. I am sure it will work! Sorry about my English. Cheers
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