How to Prevent Users from Changing Default MS Office Theme in Windows 11 or 10?

Microsoft Office programs, such as Word, Excel, PowerPoint, etc., use a basic theme by default. However, if you want, you can change the Office theme according to your requirements. You can set a Colorful, Dark Gray, Black, White, etc., theme.

Once you set a theme and want to prevent users from changing the theme for some reason, such as to comply with company policies, you need to use Local Group Policy Editor or Registry Editor.

As an administrator, you can stop users from changing your organization’s default Microsoft Office theme.

In this growupwindows article, you’ll learn to block changing themes in MS Office using Local Group Policy Editor and Registry Editor.

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

To prevent or block users from changing the default organization Office theme using Group Policy, use these steps:-

Step 1. First, install the Office’s Group Policy template on your Windows 11 or 10 machine.

Step 2. Next, open Local Group Policy Editor.

Step 3. When the Local Group Policy Editor window appears on your computer, navigate or browse to the following path on the left side:-

Computer Configuration > Administrative Templates > Microsoft Office 2016 (Machine) > Global Options > Customize

Step 4. Then, double-click on the Default Office theme policy on the right side of the Customize folder.

Step 5. Choose Enabled.

Step 6. Select a theme in the “Theme” drop-down menu you want to set for all users.

Step 7. Click the Apply button.

Step 8. Click the OK button.

Step 9. Reboot your computer to apply the changes.

Once you complete the above steps, user accounts on your PC cannot change the Microsoft Office program’s theme.

To allow changing the MS Office theme, repeat the above steps and choose the Not Configured option in the above step 5. Click Apply and then OK button.

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

To stop or prevent users from changing the default Office theme using Windows 11 or 10 Registry Editor, use these steps:-

Step 1. First, launch Registry Editor.

Step 2. Then, browse or navigate to the following key in the left sidebar of the Registry Editor window:-

HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft

Step 3. Next, right-click on the Microsoft folder and choose New > Key.

Step 4. Name the newly created key to office.

Step 5. Now, right-click on the office folder and pick New > Key.

Step 6. Name the newly created key to 16.0.

Step 7. Next, right-click on 16.0 folder and select New > Key.

Step 8. Name the newly created key to common.

Step 9. Now, on the right-side pane of common folder, right-click on free area and choose New > DWORD (32-bit) Value.

Step 10. Name the newly created REG_DWORD to default ui theme.

Step 11. Now, double-click on the default ui theme REG_DWORD and set its “Value data” to the following:-

  • 0 – Colorful theme.
  • 3 – Dark Gray theme.
  • 4 – Black theme.
  • 5 – White theme.

Step 12. Click OK.

Step 13. At last, restart your computer to apply the changes.

To revert the changes to default, navigate or browse to the following key 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. Click Yes when prompted.

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