Have a look @ this Stickie post link http://forums.avg.com/ww-en/avg-free-forum?sec=thread&act=show&id=116659.

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AVG Free Volunteer ModeratorAVG Free Forum member since - Nov. 27, 2004My total posts on the Old AVG Free Forum - 27,063
Alan

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How-To articles | FAQ

I'm trying to install the new 2011 version. I'm getting the same error code, but different info in the messages:

Severity:Error
Error code: 0xC0070643
Error message: Fatal error during installation.
Additional message: MSI Engine: Failed to initialize the package.
Context: Initailization

I'm running WindowsXP Pro SP3 32bit. I had AVG Free 9 installed. I have tried all the fixes in this thread.

Uninstalling AVG Free 9.
Delete old AVG folders.
Running MsiZap from command prompt.
Running AVG Uninstaller.
Running AVGID Uninstaller.
Reboot and install the latest version, avg_free_x86_all_1144a3191.exe. I still get the same error.

Here are my latest log files.
TIA

Did you by any chance edit your posting?. If so, Your attached files would have been deleted. Presently if a user (not a moderator) edits their post with an attached file it's deleted. This situ is in the process of being investigated.

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AVG Free Volunteer ModeratorAVG Free Forum member since - Nov. 27, 2004My total posts on the Old AVG Free Forum - 27,063
Alan

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How-To articles | FAQ

Yes, I did edit my post. Thank you for pointing that out. I'll repost everything here....

I'm trying to install the new 2011 version. I'm getting the same error code, but different info in the messages:

Severity:Error
Error code: 0xC0070643
Error message: Fatal error during installation.
Additional message: MSI Engine: Failed to initialize the package.
Context: Initailization

I'm running WindowsXP Pro SP3 32bit. I had AVG Free 9 installed. I have tried all the fixes in this thread.

Uninstalling AVG Free 9.
Delete old AVG folders.
Running MsiZap from command prompt.
Running AVG Uninstaller.
Running AVGID Uninstaller.
Reboot and install the latest version, avg_free_x86_all_1144a3191.exe. I still get the same error.

Here are my latest log files.
TIA

Reinstalling/ Uninstalling..

Hello,

I am experiencing the same problem. I used to have AVG 9.0 on Windows vista, only I updated to 2011 just recently... I wish now that I hadn't, because I am having all sorts of problems. My Malware does not switch on and AVG will not operate fully. But, the most bizarre illogical thing of all is, I cannot seem to uninstall it now either... So, now my PC seems to be making a loader noise and is running slower than usual... Please help me!!!

ive got the same prob....dunno wat to do help!!!!!!!!!!!!!!!!!!

Same Error..

Severity :Error
Error code : 0xC0070643
Error message : Fatal error during installation
Additional message : MSI Engine : Failed to install product
Context: AVG Product Installation

I got frustrated and am in the process of formatting my hard drive. Is this going to solve the problem or will i get the same error message when i try to install AVG 2011??

Here are my files:

and i meant that got the same error.


[quote=jirka82]Hello,





@alexgr
In case you face the same error as vettdj (C: drive is missing/is not system drive), please use the above outlined workaround.
In case you mean the "0xC0070643" error code, please note that it may refer to many different errors as I've mentioned in my previous post. Provide us with AVG installation log files in such case for analysis and we will be able to suggest further steps.

Thank you.

more files

The dreaded Error Code 0xC0070643..

Hi, yesterday I tried upgrading to the 2011 version of AVG free, and also have the 0xc0070643 error message.

I've tried the steps in the other threads, disabling any other security programes, uninstall tool, manual delete the avg folders, custom install, etc, still doesn't want to work.

Can someone run an eye over my log file and see if anything stands out, I've been at this for 2 evenings now and am starting to think about trying another free anti-virus program as this is really annoying me.