Error Code 25004 – Office 365/2021/2019 Activation Issues

This article describes an Microsoft office 365/2021 activation error code 25004. There are cases that have been discussed related to product activation and licensing related issues due to the hardware changes. If more no of activation are being done using the same product key, it may cause office product activation issues

Applicable to the following Operating systems:-

  • Office 365, 2021, 2019.
  • Office business and home.

Diagnose your computer to fix error code 25004:-

There are a few ironically shown Office 365/2021 error code 25004  that require immediate action. There will be a log for every action on your computer that records all the events. It is termed as an Event viewer. This is a Windows Inbuilt program under system tools, it provides all the information for the problem causing keys.

Error code 25004

This could cause due to the failure of your Windows-related services and the executable file is unable to read the required files when you try installing Office. There may be issues with the start-up programs which can be checked under System Configuration.

Perform system file scan:-

System file scan in short SFC scan is a Windows inbuilt program to fix altered/modified and damaged files of the operating system. It can fix several updates failures, and other violations done by several mismatched files.


To Run the system file SFC scan in your Windows operating system, first Open the command prompt (CMD) in admin mode and Run the command SFC/SCANNOW

Office 365/2021/2019 error code 25004 also can be fixed with this scan if they are not damaged much. If you see any file violations still exist after the scan then move to Event Viewer to check what has caused the office installation error code 25004. Watch the video to know how to perform SFC SCAN to fix Office 365 program error code 25004.

How to use Event Viewer to check office error logs:-

  1. First, click on a start button.
  2. Secondly, type “RUN” and open the Run command prompt.
  3. Then, type “EVENT VIEWER” and press enter key to open Event Viewer logs.
  4. After that, double-click on “Windows logs” from the left-side panel and select “application “.
  5. Now you can see many logs in the Centre panel.
  6. Filter the logs to find office-related issues and warnings by selecting Filter current log option from the Right side panel.
  7. Find any critical, error logs the caused Microsoft Office 2021 error code 25004.

If you can’t find any reasons for the issues then just take a chance to do a clean installation to save your time.

Error code 25004 troubleshooting:-

Basic troubleshooting start with the checking of system date and time. There could be network challenges due to Intermittent connectivity issues. If the time zone is set incorrectly, the system cannot be recognized by Microsoft servers. Make it your local time zone from where you are trying to activate Office or Windows.

In other words, the activation keys are blocked, try to take the assistance of a technician here. So that we can track the product keys on Microsoft Product code activation pages to verify the validity.

A few troubleshooting steps suggest the following:

  1. Remove temporary files
  2. Clean the previous version of Office
  3. Repair/uninstall office
  4. Install the Office program again
  5. Windows registry fix

Windows Troubleshoot

Sometimes the office won’t install due to several reasons like internet connectivity, dependencies for the product or any virus that affected your computer files, etc. Then you have to do a clean installation by removing traces of Office 365/2021 program 25004 files that existed from previous versions or by multiple office installation trails by you due to several errors.

Remove Temporary Files:-

In the process of installing Office 365/2019 or any product on your Windows machines, there are so many files gets created which are meant for the temporary purpose of memory management, within application purposes like MDI, etc.

Under normal conditions, these files are closed and deleted by Windows when you quit a Windows session. However, if you quit Windows in an irregular way (for example, restarting the computer or turning it off during an active Windows session) the files are not closed or deleted.

To remove temporary files, Follow these steps,

  1. Click on the windows start button + “R” to open the run command window.
  2. Type “%temp%” and click on the enter button, this leads to a window with temp files and folders.
  3. Select all (CTRL+A) “Shift + Delete” to remove permanently,

There may be some files requires admin permission to remove, Just click on ok. Only a few files can’t be deleted because there are some applications might be using them internally. Skip those files.

Error code 25004 Fix- by removing Office traces from Program files:-

In some cases, Office installation may stop because of several reasons like slow internet, server issues, etc. Then your machine creates some of the program files required to office 365/2010/2016 product.

When you try to re-install this time, you may see issues like these types of office program error code 25004 and different series based on the reason for failure.

You have to delete these Office traces from the computer before trying the re-installation process.

Repair/Uninstall Office 365/2021 installation program: –

Applies To: Office 2019, Office for Business, Office 365 Admin, Office 365 Small Business Admin, Office 2021

The following steps describe how to uninstall Office 2019 or 2019 products on a PC (laptop, desktop, or 2-in-1). For other versions of Office, including Office 2019 for Mac, or older versions of Office, see the section, Uninstall Office for Mac, Office 2019, or Office 2021 below. Try uninstalling Office using the Control Panel first. If that doesn’t work use the easy fix tool or try uninstalling Office manually.

For Windows 8 / Windows 11/10:-

  1. Go to the control panel from the start button,
  2. Select Programs and features there to reach a list of installed programs on your computer. (In Windows 10 you can just type “programs and features in the Cortana search bar beside windows start logo)
  3. From the list, search for Microsoft Office 365 product and click on Change
  4. A window will open like here showing Add, Repair, Remove options
  5. Then proceed to repair and wait for sometimes. Once the repair is successful you are ready to use Microsoft Office 365 product again.

To uninstall follow the first 4 steps from the repair process, and choose to Remove instead of Repair.

IMPORTANT: It’s impossible to uninstall office applications (word, excel, publisher, etc.) individually from total office products. The only way to uninstall an individual app is if you purchased it as a stand-alone version.

Installing Office Product:-

  1. Once you have done the uninstallation part, now do a clean Office 365/2021 installation.
  2. First, log in to your Microsoft Office account at
  3. Secondly, go to your dashboard to see the product you purchased.
  4. After that, select the “Install Office “ option and then let it download, (you may see click Save, Run, Setup, or Save File depending on browser type, select “save” for future purposes)
  5. Finally, go to downloads in your computer and Double click on the office setup file to install.
  6. If the office 2021program error code 25004 still persists then try an advanced registry fix if you are familiar with it.

Windows Registry Fix:-

The registry in Windows is a console that shows the structure of your Windows Operating system and it’s internal programs. Similarly, the Hex codes inside the registry may change due to some unwanted conflicting Office 365 programs that use the same resources.

To fix the Office 2021 installation error code 25004 in Office 365/2019/2021 you need to delete the altered Office Registry keys or remove and re-create the keys with previous values. (HEXA CODE or H-KEYS).

Note: Don’t do Registry changes if you are not aware of the structure, as it damages applications with one single change. Sometimes damages your computer operating system too.

Take support from Online experts regarding any unresolved issues on your computer.

Chat with our technician to fix your computer issues Now!

Tech Support