I can't install any program

I have had a lot of problems lately installing Windows Updates but finally got them to install (Ireally don't know why, they suddenly installed when I did a shutdown last night). I decided to try the Microsoft Security Essentials program so I downloaded the install package and uninstalled AVG. Well now I can't install anything...I tried MSE multiple times with suggestions from help sites but nothing worked. Then I tried to reinstall AVG and it won't install either. I get error code 0xC0070643. So now I am completely unprotected. What do I do now? Please help.

 

Looks like you've got some file clashing going on - I'd suggest completely uninstalling everything AVG and MSE by using the programs' specific cleaning tools (if any), and then installing only one of the programs.

 

http://www.avg.com/us-en/download-tools
Run the removal utility.
Try loading MSE.

Please clarify, is it only AV's or other apps/programs as well.

If you have a restore point, can you restore to before the AVG uninstall.
Cheers..

 

I can't install or uninstall anything. I tried to uninstall SuperAntiSpyware and got :
Internal error 2203
C:\Windows\Installer\15405d.ipi, -2147287035

I get this when trying to install or uninstall. I have already tried the AVG removal tool...didn't work

 

Can you scan and clean with SAS? Is this only an issue with Av's and malware scanners?
Do you have Malwarebytes Anti malware. If yes can you scan?
Tried safe mode- F8 at boot?

May need to go through the Read And Run Me:
http://forums.majorgeeks.com/showthread.php?t=35407

Cheers..

Edit: How about the sys restore. What OS are you on and service pack?

 

Sorry, I just noticed you got the all clear from Tim @ MG's Malware forum..

 

Start> Search> CMD> Right click and run as Admin.
sfc /scannow

Cheers..

 

I did a system restore to last evening and was able to reinstall AVG but MSE still won't install. I'm just going to leave it alone for a while...tired of messing with it! BTW...the Windows Updates that I finally got installed are gone now since the restore and they won't install either. I'm about ready to just reinstall Windows and start over. I'm so frustrated. Thanks for your suggestions.
The Scannow did not find any integrity violations.

 

Reboot again. What are the kb's #. Try installing one at a time. If you error out give us the numeric/alpah-numeric code. You can also hide the errant KB from the next update and go ahead with the rest. The important updates need to be installed. Is it .Net ?

This stands unresolved

Cheers.

 

I tried again after a reboot but neither one would install. One is Silverlight
KB2416427 and the other is .NET Framework 4 KB982670. Both gave error code 643.

 

I'm one of the fortunate not to have a .Net issue ever LOL
http://www.majorgeeks.com/.NET_Framework_Cleanup_Tool_d6179.html
Please read carefully.
I'd run it and reboot and go for a Windows update.
Like I said on my machine.

Cheers..

 

I have done this already and it didn't work. I did get the3.5 version to install but not ver.4.

 

My home computer:

Dell Dimension 8400 desktop about 4 yrs old (originally with Windows XP)
Windows 7 Home Premium 32 bit fully updated until lately
Pentium 4 CPU 3.00 GHz
500 GB hard drive
350 GB external hard drive
2 G memory
IE 8
Windows Live mail
Soundmax Integrated Audio
NVidia GeForce 9400 GT video
D-Link Dir628 router
networked with HP Pavilion dv6 laptop (which would not run Windows Update at all, but I got free help from microsoft and had to change the registry to get it to work) It's all good now.
Comcast cable ISP

 

From: http://support.microsoft.com/kb/2416427

Reinstall Silverlight it has the latest update.
http://www.microsoft.com/getsilverlight/Get-Started/Install/Default.aspx

For the .NET
http://www.microsoft.com/downloads/en/details.aspx?FamilyID=5765d7a8-7722-4888-a970-ac39b33fd8ab

Some more reading for you.
http://social.answers.microsoft.com.../thread/7ce2fc47-88ad-40e9-be3a-c2e17d099b51/

Unfortunately not a resolution.
Keep us updated if you get this fixed.

Cheers..

 

Just to let you know what I finally did....
I asked Microsoft for help since my problem was concerning system security and they tried to help me for free. We tried various things but nothing was working so they finally told me to do a upgrade install of Windows 7 to fix some corrupted files. I was about to do this anyway so I did the reinstall. Everything is working just fine now. I should have done this earlier and saved myself some grief. Thanks for all your suggestions