Office Settings & Configuration

How to Restore the Ctrl+U Underline Shortcut in Microsoft Word

Khadija KhanKhadija Khan Nov 2, 2026 870 views

Question details

The user needs to restore the default Ctrl+U keyboard shortcut used to underline text in Microsoft Word.

Restore the Ctrl+U Underline Shortcut in Microsoft Word
Product
Microsoft Word
Device & OS
not provided
Scenario
The user is attempting to underline text using the standard keyboard shortcut, but it fails because the key combination has been removed or reassigned in the settings.
Observed behavior
Pressing Ctrl+U does not apply the underline formatting to the selected text.
Before you start

Ensure that you don't have any third-party keyboard mapping software or global hotkeys running in the background, as these can sometimes override native application shortcuts.

Solution 1Recommended

Reassign the Ctrl+U Shortcut via Customize Keyboard Settings

Use Word's built-in customization options to manually map the Ctrl+U key combination back to the Underline command.

Microsoft Word allows users to deeply customize keyboard shortcuts. If a default shortcut stops working, it can usually be fixed by reassigning it through the Customize Ribbon menu.

1
Open Word Options

Launch Microsoft Word, click on the 'File' tab in the top-left corner, and select 'Options' at the bottom of the menu.

2
Access Keyboard Shortcuts Customization

In the Word Options dialog box, select 'Customize Ribbon' from the left pane. Then, click the 'Customize' button located next to 'Keyboard shortcuts' at the bottom.

3
Locate the Underline Command

In the Customize Keyboard dialog box, select 'All Commands' under the Categories list on the left. Scroll through the Commands list on the right and select 'Underline'.

4
Assign the Shortcut

Click inside the 'Press new shortcut key' text box. Press the 'Ctrl' and 'U' keys simultaneously on your keyboard. Finally, click the 'Assign' button at the bottom left, then close both customization dialogs to save your changes.

Reassign the Ctrl+U Shortcut via Customize Keyboard Settings
Shortcut Restored: You can now highlight any text in your document and press Ctrl+U to quickly apply or remove the underline formatting.
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Frequently Asked Questions

Why did my Ctrl+U shortcut suddenly stop working in Word?

This typically happens if the shortcut was accidentally overwritten when you were customizing other commands, or if a global hotkey from another background application is interfering with Microsoft Word.

How can I reset all keyboard shortcuts to their default settings?

To restore all default shortcuts, go to File > Options > Customize Ribbon, click 'Customize' next to Keyboard shortcuts, and then click the 'Reset All' button at the bottom of the dialog box.

Can I assign a different shortcut instead of Ctrl+U for underlining?

Yes. Following the same customization steps, you can select the 'Underline' command and press any unassigned key combination (such as Alt+U) in the 'Press new shortcut key' box, then click Assign.

Does this shortcut customization method apply to Excel and PowerPoint?

No. The 'Customize Ribbon' interface for directly reassigning keyboard shortcuts is specific to Microsoft Word. Excel and PowerPoint do not natively offer this specific dialog box for remapping core shortcut keys.