How to Fix Word Content Disappearing When Updating Fields with F9
Question details
The user's document content completely disappears when attempting to update all fields using the Ctrl+A and F9 keyboard shortcut.

- Product
- Microsoft Word
- Device & OS
- not provided
- Scenario
- Updating all fields in a document using the standard keyboard shortcuts.
- Observed behavior
- Selecting all text and pressing F9 causes the existing content to vanish rather than refreshing the field values.
Before making any structural changes, press Ctrl+Z immediately to undo the action and restore your missing content, then save a backup copy of your document.
Toggle Field Codes and Adjust Function Keys
Reveal hidden field codes to rescue trapped text and ensure your keyboard function keys are sending the correct command.
This issue typically occurs for two reasons: your laptop's F9 key is mapped to a media function instead of the standard F9 command, or your regular document text was accidentally typed inside a hidden field code delimiter. When the field updates, Word replaces the entire field (including your trapped text) with the field's actual result.
Press `Ctrl+Z` to undo the F9 update and bring back your disappeared text.
Press `Alt+F9` (or `Alt+Fn+F9` on some keyboards) to toggle the display of all field codes in the document.
Look for curly brackets `{ }` that represent field delimiters. If you see your normal document text trapped inside these brackets, cut the text and paste it outside of the field code.
Hide the field codes again by pressing `Alt+F9`. Select all text with `Ctrl+A`, then press `Fn+F9` to update the fields properly without triggering your computer's media controls.

Update Document Fields Safely in WPS Writer
Avoid frustrating keyboard glitches and field code errors by using WPS Writer. It provides clear, right-click context menus for updating fields, ensuring your content stays intact while maintaining full compatibility with Microsoft Word.
- 1. Open your document: Launch WPS Writer and open your .docx file.
- 2. Select the document text: Press `Ctrl+A` on your keyboard to select all content in the document.
- 3. Update fields via menu: Right-click anywhere on the highlighted text and select 'Update Field' from the context menu to safely refresh all data.
- 4. Manage specific field codes: To check for text trapped in fields, right-click any specific field and choose 'Toggle Field Codes' to safely inspect its contents.

Frequently Asked Questions
Why does pressing F9 change my computer volume or brightness instead of updating Word fields?
On many modern laptops, the top row keys are set to control system settings (like volume or brightness) by default. To send the standard 'F9' command to your document editor, you must hold down the 'Fn' key while pressing F9.
What are field delimiters in a word processing document?
Field delimiters are special curly brackets { } that contain background field codes (like dates, page numbers, or formulas). They are different from regular typed brackets. If standard text is accidentally placed inside them, that text may be overwritten and disappear when the field refreshes.
How do I reveal or hide all field codes at once?
You can toggle between viewing the field results and the underlying field codes for the entire document by pressing Alt+F9 (or Alt+Fn+F9 depending on your keyboard). Pressing it a second time will revert to the standard view.




