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Windows 7: Uninstalling Windows 7 SP1

07 Aug 2011   #1

Windows 7 Pro SP1
 
 
Uninstalling Windows 7 SP1

Hi everyone,
For different reasons, I have to uninstall this SP.
However, this appears to be impossible, even in safe mode.
The message produced is ''Service pack cannot be uninstalled''.
I'm looking for a workaround solution.
Thank you.

My System SpecsSystem Spec
.

07 Aug 2011   #2
Microsoft MVP

64-bit Windows 8.1 Enterprise
 
 

Hello Baback, and welcome to Seven Forums.

If you used the SP1 (Service Pack 1) Disk Cleanup Tool, if SP1 came preinstalled on your computer, or you installed Windows 7 with a Windows 7 w/SP1 installation disc, then you will not be able to uninstall the SP1.
My System SpecsSystem Spec
07 Aug 2011   #3

Windows 7 Pro SP1
 
 

Hi Brink,
Thanks for your answer.SP1 was installed through Windows updates.
My question is if these tools succeed will I be able to reinstall SP1 afterwards.I need to delete it just for performing a Windows upgrade in order to repair Windows system files.
My System SpecsSystem Spec
.


07 Aug 2011   #4
Microsoft MVP

64-bit Windows 8.1 Enterprise
 
 

Do not use the tools. They will prevent you from being able to uninstall SP1.

If you are able to uninstall SP1 using an option in the tutorial below, then you will be able to reinstall it again afterwards.

Windows 7 Service Pack 1 (SP1) - Uninstall
My System SpecsSystem Spec
07 Aug 2011   #5

Windows 7 Pro SP1
 
 

Well, I mean ,can I use Disk cleanup Tool or the suggested prompt command(dism /online /cleanup-image /spsuperseded /hidesp) to remove sp1.

I had already tried the options of this tutorial before posting here.
My System SpecsSystem Spec
07 Aug 2011   #6
Microsoft MVP

64-bit Windows 8.1 Enterprise
 
 

That only removes the backups created when you installed SP1, and prevents SP1 from being uninstalled.

Since you did that without reading the warning first, you're only option would be a clean install of Windows 7 to remove SP1 now.
My System SpecsSystem Spec
08 Aug 2011   #7

Windows 7 Pro SP1
 
 

Quote   Quote: Originally Posted by Brink View Post
That only removes the backups created when you installed SP1, and prevents SP1 from being uninstalled.

Since you did that without reading the warning first, you're only option would be a clean install of Windows 7 to remove SP1 now.
I think there is confusion on what I did:
Here's what I tried and did not work:

1) Deleting SP1 from the Control Panel
2) Deleting SP1 from a command prompt: Wusa.exe /uninstall /kb:976932
3) My System Restore does not work.
To keep it simple, nothing to remove it has worked so far.

May I try the options I mentionned in this previous post?

Quote   Quote: Originally Posted by Baback View Post
Well, I mean ,can I use Disk cleanup Tool or the suggested prompt command(dism /online /cleanup-image /spsuperseded /hidesp) to remove sp1.
My System SpecsSystem Spec
08 Aug 2011   #8
Microsoft MVP

64-bit Windows 8.1 Enterprise
 
 

Quote   Quote: Originally Posted by Baback
May I try the options I mentionned in this previous post?

Well, I mean ,can I use Disk cleanup Tool or the suggested prompt command(dism /online /cleanup-image /spsuperseded /hidesp) to remove sp1.
No. That does not uninstall SP1. Instead, it prevents SP1 from being uninstalled. This was why I asked if you had used it before.

It appears that your only option is to do a clean or custom install of Windows 7.
My System SpecsSystem Spec
08 Aug 2011   #9

Windows 7 Pro SP1
 
 

Ok then .Thanks a lot
My System SpecsSystem Spec
08 Aug 2011   #10
Microsoft MVP

64-bit Windows 8.1 Enterprise
 
 

You're welcome, and sorry that it'll have to be a reinstall.
My System SpecsSystem Spec
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