Fix: Index Not Updating in Word

By GenText Editorial Team March 30, 2026 word-tutorial
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Quick Answer

Mark entries (References > Mark Entry), then update index (right-click > Update Field) or press Ctrl+Shift+F9.

The Problem

Your Word document has an index, but new entries aren’t showing up after you added them. The index was created days ago and hasn’t changed despite significant document edits. The index shows old entries but misses new keywords. Deleting the index and recreating it results in empty index. Index stays frozen at creation time; it won’t reflect current document.

Quick Fix

Update the index immediately:

  1. Right-click the index in your document
  2. Select Update Field
  3. A dialog asks: “Update index entries only?” or “Update entire index?”
  4. Choose “Update entire index” (unless you want to update only page numbers)
  5. Click OK
  6. Index refreshes with latest entries
  7. Done

If index still hasn’t changed, proceed to Step-by-Step Solution.

Step-by-Step Solution

Step 1: Understand Index Structure

Indexes require manually marked entries.

  1. Unlike Table of Figures (which uses captions), indexes must be manually marked
  2. For each word you want indexed:
    • Select the word in document
    • Go to References > Mark Entry
    • The entry is marked and indexed
  3. Words without marks won’t appear in index
  4. If you added new content but didn’t mark entries, they won’t appear

Step 2: Mark New Entries for Indexing

Add words to be indexed.

  1. Select the first word you want indexed
  2. Go to References > Mark Entry (or Insert > Index and Tables > Index > Mark Entry)
  3. The Mark Index Entry dialog opens
  4. Main entry field shows the word
  5. You can edit it if needed
  6. Check “Add” button at bottom (not Mark All)
  7. The word is marked for the current location only
  8. Click Mark for each instance of the word
  9. Or click Mark All to mark all instances throughout document
  10. When done marking a word, close dialog
  11. Select next word and repeat

Step 3: Mark Multiple Entries Efficiently

For many words, mark quickly.

  1. Select first word
  2. Go to References > Mark Entry
  3. Word appears in Main entry field
  4. Click Mark All to mark ALL instances
  5. Close dialog with X button (not OK yet)
  6. Select next word in document
  7. Go to References > Mark Entry again
  8. Next word appears in dialog
  9. Click Mark All
  10. Repeat until all words marked
  11. Close dialog with X when done

Step 4: Update Index After Marking Entries

New marks won’t appear until index refreshes.

  1. Right-click the index in your document
  2. Select Update Field
  3. Dialog appears:
    • “Update index entries only” — Updates page numbers but no new entries
    • “Update entire index” — Full refresh including new entries
  4. Choose “Update entire index”
  5. Click OK
  6. Index now includes newly marked entries

Step 5: Verify Index Entries Dialog

See all marked entries at once.

  1. Go to References > Mark Entry again
  2. The dialog shows the window for marking (doesn’t show all current marks)
  3. To see list of all marked entries:
    • Go to Insert > Index and Tables (instead of Mark Entry)
    • Might show index management view
    • Or click Mark Entry > options if available
  4. This helps you verify entries are marked

Step 6: Delete Index and Recreate If Corrupted

Most reliable fix for broken index.

  1. Right-click the index in document
  2. Select Delete Table or press Delete
  3. Index is removed
  4. Ensure entries are marked: go through document, mark important words
  5. Position cursor where index should be
  6. Go to References > Index (or Insert > Index and Tables > Index)
  7. A dialog opens with index options
  8. Choose format/style (e.g., “Formal” or “Simple”)
  9. Click OK
  10. New index generates with currently marked entries

Step 7: Check Index Format and Options

Index settings might hide entries.

  1. Right-click the index
  2. Select Edit Field or Field Code
  3. You see code like: {INDEX ...}
  4. Options in code control what shows:
    • \c — Number of columns
    • \f — Field codes to index
  5. If there are filtering options, they might exclude new entries
  6. Best fix: Delete and recreate without complex options

Step 8: Mark Entries with Sub-entries

Organize index with main and sub-entries.

  1. Select a word
  2. Go to References > Mark Entry
  3. Main entry: Type the main topic (e.g., “Animals”)
  4. Sub-entry: Type related word (e.g., “Dogs”)
  5. “Subentry” appears below in the dialog
  6. Click Mark or Mark All
  7. Index now shows: “Animals” with “Dogs” indented underneath
  8. This creates hierarchical index

Step 9: Update All Fields at Once

For comprehensive refresh.

  1. Select all: Ctrl+A
  2. Press Ctrl+Shift+F9 (update all fields)
  3. All fields in document refresh, including index
  4. Wait a few seconds for update to complete
  5. Click in document to deselect

Step 10: Rebuild Index from Scratch

If index is severely corrupted:

  1. Go through entire document
  2. Select every important word/concept
  3. For each, go to References > Mark Entry > Mark All
  4. This is time-consuming but ensures clean marks
  5. When all marked, delete old index
  6. Insert new index: References > Index
  7. New index generates with all marks

Why This Happens

  1. New words not marked — Words added but not marked for indexing
  2. Index not refreshed — After marking, index wasn’t updated
  3. Index corrupted — Index field code is invalid
  4. Entries hidden — Marked entries might be in hidden text
  5. Formatting preventing mark — Special formatting preventing proper marking
  6. Deleted marked entries — Entries were marked but then text deleted
  7. Document restructuring — Major edits changed structure, breaking index links
  8. Mark All marks incorrectly — Mark All might miss some instances

How to Prevent It

  1. Mark entries as you write — Mark important words immediately
  2. Use Mark All strategically — Mark All for main terms that appear multiple times
  3. Update index regularly — Update weekly if document is actively edited
  4. Keep entry list simple — Index 20-30 key terms, not hundreds
  5. Verify marking worked — Right-click marked word, see mark indicator
  6. Update before sharing — Always refresh index before final document
  7. Use consistent terminology — Mark “database” not “data base”
  8. Test index early — Create after first entries marked to verify

Still Not Working? Alternative Solutions

  1. Create index manually — Type list of terms and page numbers
  2. Use Find & Replace — Find key words, note page numbers, create manual index
  3. Use Table of Contents — TOC might serve same purpose as index
  4. Copy from backup — If you have earlier version with working index
  5. Use Google Docs — Different indexing approach
  6. Export to PDF — PDF might include working index even if Word version doesn’t
  7. Hire professional — For complex academic index, use professional editor
  8. Contact Microsoft Support — For persistent index corruption

Key Takeaways

  • Indexes require manual marking (References > Mark Entry)
  • Mark All marks all instances of a word throughout document
  • Update index with right-click > Update Field
  • Use Ctrl+Shift+F9 to update all fields at once
  • Create sub-entries for hierarchical organization
  • Delete and recreate index if corrupted
  • Mark entries consistently (same spelling/capitalization)
  • New words must be marked; automatic indexing not available

Frequently Asked Questions

Why doesn't my Word index include new words I added?

Words must be marked as index entries first (References > Mark Entry). After marking, update index field (right-click > Update Field).

How do I update an index after adding new content?

Right-click the index and select Update Field. Or select all (Ctrl+A) and press Ctrl+Shift+F9 to update all fields.

Can I automatically include all keywords in the index?

No, Word requires manual marking. Highlight each word you want indexed, click References > Mark Entry, then update the index.

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