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Error 25506 message shows when you run the Setup program for Office XP occurs when a user tries to run set up office XP or publisher 2002 and this problem occurs if the dll file which is Riched20.dll is missing or corrupt or it may be in wrong version. To successfully run the setup office XP or publisher 2002 it is most important to repair this file. In this section you will able to know how to fix error 25506.


  • The most common reason behind this error is installing incompatible or outdated driver, missing system files, corrupted registry file or damaged pc by viruses. Advanced System Repair Tool is the only solution for all the system errors. By installing this tool you will be able to remove above windows error.
    3 Steps to Fix this Error

    Step 1. Download Advance System Repair Tool [File Size: 15.7 MB]
    Step 2. SCAN your Windows PC
    Step 3. Click Fix button to Repair Error

Symptoms of the error 25506

A user receives error message when trying to run Setup for Office XP or Publisher 2002. At such moment your System shows the below given message Error 25506. Microsoft program requires updated system files not detected on your computer. You must install the Microsoft Office 2002 System Files Update prior to installing program. C:\Windows\System\Riched20.dll is version when we require version

Cause of the error 25506

As the above step you know this error occurs if the Riched20.dll file is damaged or corrupt and it is missing. If the dll file is in wrong version Windows unable to support t and a user unable to run the setup file so it is most necessary to know the solution of “Error 25506” message when run the Setup program for Office XP.

Solution of “Error 25506” message when run the Setup program for Office XP

To solve this issue you have to rename the Riched20.dll file. You Windows file may be in hidden stage and to unhide files follow the below given steps.

This is applicable for Microsoft Windows 98 or Microsoft Windows NT 4.0

First close all programs then click on Start menu then go to find then click on Files and folders. In the named box type Riched20.dll then from the look in box select your local hard disk then click on Find now to search the file. Then you have to rename in each file by right click on the file give a new name for your file for example Riched20.old then press Enter.

For Microsoft Windows Millennium Edition (Me) or Microsoft Windows 2000

Close all programs. Click on Start –>Search–>files and folders then type Riched20.dll and from the Look in box select local hard disk Then search file and right click on file and rename of each file then press enter. On the file menu click on close the program. Then insert Microsoft program CD OR DVD ROM drive then in Windows Explorer go to the root of the CD-ROM. If you are running Windows 98 or Windows Me you have to double click on Instmsi.exe file. If you are running Windows NT 4.0, Windows 200 or Windows XP then double click on Instmsiw.exe and click on ok when successfully installed. Now run the set up MS Program. If you are unable to do manually then you can take the help of a third party tool Advanced System Repair Tool which is best to fix error 25506 any Windows error.


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