Most of the time when installing MS Office 2010 over an older version of MS Office (2003, 2007) you might get the following error message during the installation.
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Microsoft Office Professional Plus 2010 encountered an error during setup.The Windows Installer service cannot update one or more protected Windows files.


There are lots of reasons that can fire Office Installation Error và the fixes are different based of the cause. Here, I am explaining the most suitable fixing techniques that can surely resolve a problem.
Method 1: Fix using Advanced System Repair Tool
Mostly this error occurs when there are missing system files, corrupted registry entries, outdated driver and software and if there is any malware in your PC.
Solution: You must use Advanced System Repair Tool khổng lồ fix all these areas in one click. By cleaning & boosting PC speed using System Optimizer tool, most probably you will not face any problem when installing MS Office.


3 Steps lớn Fix this Error
Step 1. download Advanced System Repair Pro
System Requirements Features Awards Windows 11/10/8/7 Comaptible
Method 2: All Time Favourite Solution: Restart your Computer
Yes. Restarting a computer can fix 1/2 of PC Problems without any reason. You must restart your computer & then try lớn install MS Office 2013/2010 or 2007. Sometimes, if you have installed a program or driver before installing office, it requires a PC restart. Without restarting your PC if you try khổng lồ install MS Office then most probably you will get the installation error.
Method 3: Update Windows and Drivers
If you have not updated windows then most probably the required service pack is not available và the new installation of MS Office may get end during installation. You must make sure that your Windows OS & all the installed driver is updated properly.
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Method 4: Rename Microsoft Help folder
This technique also works like charm. Follow the given steps.
Step 1: Press Windows Key + R to mở cửa Run Windows.






Method 5: Install MS Office with Administrative Account
The main reason behind MS Office Installation error is MS Office thiết lập is unable khổng lồ write data in ProgramData folder. This is because either your tài khoản doesn’t have administrative privilege to install the application. Reboot your PC Administrator Mode and then try to lớn install office.
Step 1: Press Windows Key + R and xuất hiện Run Dialog Box.










Method 6: Install MS Office in Clean Boot Mode.
When you boot your PC in Clean Boot Mode, the PC will only load the basic và necessary drivers. In clean boot mode, try lớn install MS Office & most probably your office will get installed without any error. Here is the detailed guide using step by step (picture) about How to lớn start PC in Clean Boot Mode.
Summary
This article contains information about how khổng lồ fix Microsoft Office Installation Error or Microsoft Office Professional Plus 2010 encounter an error. Hope, this article will help you lớn fix the MS Office Installation Error.