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Microsoft Security Essentials wont install


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#1 BEANDammit

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Posted 18 May 2012 - 11:10 PM

I have been trying to install MSE but keep getting error code 0x80070656. I just ran Opswat's App Remover tool which detected no security software installed.I tried Malwarebytes free trial which found 2 problems and fixed them. Previously I had Mcafee installed which was removed using Revo Uninstaller Pro.Help,I need some security

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#2 boopme

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Posted 19 May 2012 - 09:49 PM

Hello, what is your Operating System?
If Windows XP, click Start, click Run, type appwiz.cpl, and then press Enter.

If Windows Vista, click Start. In the Start search box, type appwiz.cpl, and then press Enter.

If Windows 7, click Start. In the Search programs and files box, type appwiz.cpl, and then press Enter.

Reboot and try again.. Be careful as you have no AV installed here/

>>

Ensure that the Windows Installer service is running
1.In Windows 7, click Start. In the Search programs and files box, type services.msc, and then press Enter.
–or–
In Windows Vista, click Start. In the Start Search box, type services.msc, and then press Enter.
–or–
In Windows XP, click Start, click Run, type services.msc, and then press Enter.

2.Right-click Windows Installer, and then click Start. If Start is unavailable and the Stop and Restart options are available, this tells you that the service is already started.

3.On the Services page, on the File menu, click Exit.

4.In Windows 7, click Start. In the Search programs and files box, type command prompt. Right-click Command Prompt, and then click Run as administrator.
–or–
In Windows Vista, click Start. In the Start Search box, type command prompt. Right-click Command Prompt, and then click Run as administrator.
–or–
In Windows XP, click Start, click Run, type cmd, and then press Enter.

5.Type MSIEXEC /REGSERVER, and then press Enter.

Note:

There is no indication that this command has succeeded or failed.

6.Install Microsoft Security Essentials again. If this doesn't resolve the issue, continue to the next step.




If you had used Windows Live OneCare , remove all of it.
OneCare Utility cleanup tool

http://go.microsoft.com/fwlink/?LinkId=167350

Reboot and try again.
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#3 JColt

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Posted 20 May 2012 - 07:24 AM

I have fixed that on a few pc's. Go here for details

http://answers.microsoft.com/en-us/protect/forum/protect_start/installation-error-0x80070643/908fad3e-f9fc-4d8a-be83-ae7d3bc48db5




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