We can try the following steps to solve the problem:
Unloading
Before you install the official version of Office 2010, uninstall the other versions of Office software or the Office 2010 Trial version that you have previously installed.
You can click here and use the Microsoft Fixit tool to automate the uninstall. The Fixit tool provides three versions of Office 2003, Office 2007, and Office2010, please select one of them, as appropriate. Reboot your computer when you are done (it is easy to suggest that you print this article for subsequent operations)
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Restore system default permission settings
We can manually reset the system's security settings by using the following command line (after resetting, the related changes cannot be undone, so it is easy to recommend that you make a full backup of the current registry before the operation).
For Windows 7/vista Systems
Open the Start menu and find theCommand Prompt", Right click, select"Run as Administrator”。
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(If pop-up User Account Control window, please allow to continue)
Type the following command, and then press Enter:
secedit/configure/cfg%windir%/inf/defltbase.inf/db defltbase.sdb/verbose
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For Windows XP Systems
Find from the Start menuCommand Prompt", right-click to select"Run Identity”。 Then open it with an administrator account.
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Type the following command, and then press Enter:
secedit/configure/cfg%windir%/repair/secsetup.inf/db secsetup.sdb
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Note: The above command does not take effect in Windows home version of the system. If you want to reset the home version of the system security settings, click here and use the Fixit gadget provided in the article to complete.
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Perform system scans ditto to open a command prompt as an administrator, type the command "sfc/scannow ", and then press Strong class= the "uiterm" >enter key.
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If system files are wrong, insert the system installation disc to select the repair installation.
If you do not have a CD-ROM installed, you can also find related files from other working computers that have the same system installed, and then copy and replace the offending folder.
For example, if the font file is wrong, you can open the Windows folder by typing in the address bar of the working computer: %windir% . Then locate the Fonts font folder and copy the replacement to the error machine.
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Now, try installing Office 2010 again.