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Windows 7: Office 2010 Pro Plus Uninstallation

15 Jun 2010   #1

windows 7 ultimate
Office 2010 Pro Plus Uninstallation


I last week installed ms office 2010 professional plus trial in my windows 7 os along with office 2007 enterprise. Afterwards i uninstalled the office 2010 and reinstalled the same with different trial key from microsoft site, but in the end of setup process fails the installation and shows error message as below:
"Error 25004.The product key u entered cannot be used on this machine.this is most likely due to previous office 2010 trials installed.(system error-1073422308)".
But I deleted all the registry key except the one following key:


Pls. help me to delete the above and install office 2010 professional plus final.

Thankx in advance.

My System SpecsSystem Spec
15 Jun 2010   #2

Windows 7 x64 pro/ Windows 7 x86 Pro/ XP SP3 x86

1) AFAIK, only one Professional Plus Trial key can be installed on any given computer EVER. If you install a trial, use it, then uninstall Office and then go back to the Microsoft website and get a new key, the second installation will be rejected with the particular error message you are getting.

2) However, you can try deleting all left over entries manually and check whether reinstall works. It is not clear to me why you didnt delete the key HKLM\SOFTWARE\Microsoft\Office. In addition to that key, delete the key HKCU\SOFTWARE\Microsoft\Office.

Run the MS installer cleanup utility and remove Office 2010 entry. Download from following link.

Navigate to the C:\Program Files folder and delete any Office folders.

Click Start button, type "%temp" without quotes and hit Enter. Clean out the temp folder.

Restart your computer, then try installing Office with the new trial key.
My System SpecsSystem Spec
15 Jun 2010   #3

windows 7 ultimate

HI Bill,

I tried all the above u mentioned above. Still am not able to delete that particular registry key.
In that registry key all subkeys are deleted except one subkey called "Common".
While try to delete that the following message comes:
"Error deleting key
Cannot delete common:Error while deleting key."

Pls. help me to resolve this.
My System SpecsSystem Spec

15 Jun 2010   #4

Windows 7 x64 pro/ Windows 7 x86 Pro/ XP SP3 x86

Well, you could try giving yourself full permissions on the key, then try deleting. That may or may not work.

I'm afraid, thats the max I can help on this issue. It makes eminent sense that MS would not allow unlimited reinstalls of the trial version. If you have already tried out Office 2010 for 60 days, that should be enough time to decide whether you want to buy the product or stick to whatever you are using right now.
My System SpecsSystem Spec
15 Jun 2010   #5

windows 7 ultimate

Hi Bill,

I also tried permission change, Still not able to solve this.
Anyway thankx for ur reply.
If u have any solutions pls. post it.

My System SpecsSystem Spec
19 Jun 2010   #6

Windows 7 Ultimate X64

try doing a system restore back to the day before you installed office 2010
My System SpecsSystem Spec

 Office 2010 Pro Plus Uninstallation

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