How to Stop Users from Changing Default MS Office Theme on Windows 11 or 10?

Furthermore, Microsoft Office programs, such as Word, Excel, PowerPoint, etc., use a basic theme by default. At the same time, one can change the Office theme according to their need. You can set a Colorful, Dark Gray, Black, White, etc., theme. But what if you want to set a theme for all users? Using Local Group Policy Editor or Registry Editor, you can restrict theme change in the MS Office.

Even if you are an administrator and want to stop users from changing your organization’s default Microsoft Office theme, this risewindows article will guide you. We will show the steps to block changing themes in MS Office using Local Group Policy Editor and Registry Editor.

How to Prevent Users from Changing Default Office Theme using Local Group Policy Editor?

To prevent or stop users from changing the default organization Office theme using Group Policy, use the following steps:-
Step 1. Install the Office’s Group Policy template on your computer.
Step 2. Now, launch the Local Group Policy Editor.
Step 3. Then, when the Local Group Policy Editor window opens. Browse to the following path on the left side:-
Computer Configuration > Administrative Templates > Microsoft Office 2016 (Machine) > Global Options > Customize
Step 4. After that, on the right-side of Customize folder, double-click on the Default Office theme policy to change the settings.
Step 5. Next, Select the Enabled option.
Step 6. Now, select a theme from the “Theme” drop-down menu you want to set for all users.
Step 7. Then, click the Apply button.
Step 8. Lastly, hit the OK button to save the changes.
To allow the theme changes in MS Office again, repeat the above steps and choose the Not Configured option in Step 5. Click Apply and then OK button.

How to Stop Users from Changing Default Office Theme through Registry Editor?

To stop or prevent users from changing the default Office theme using Windows Registry, do the following:-
Step 1. Firstly, open the Registry Editor.
Step 2. Now, When Registry Editor opens, navigate to the following key in the left sidebar:-
HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft
Step 3. Right-click on the Microsoft folder and select New > Key.
Step 4. Then, name the newly created key as office.
Step 5. After that, right-click on the office folder and select New > Key.
Step 6. Next, name it as 16.0.
Step 7. Now, right-click on 16.0 folder and choose New > Key.
Step 8. So name it as common.
Step 9. On the right-side pane of .common folder, right-click on blank space and select .New > DWORD (32-bit) Value.
Step 10. Then, name it as default ui theme.
Step 11. Next, double-click on default UI theme and set its value data as follows:-
  •  Colorful theme.
  •  Dark Gray theme.
  •  Black theme.
  •  White theme.

Step 12. Then, click the OK button.

Step 13. Lastly, reboot your computer to apply the changes.
To revert the changes to default, navigate to the following path in the Registry Editor:-
Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\office\16.0\common

On the right side of common folder, right-click on default ui theme and select Delete option.

That’s it.

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