Word Error: Insufficient Memory or Disk Space — Solutions

You are working on a document in Word when a message appears: “There is insufficient memory or disk space. Word cannot display the requested font.” This error stops you from editing, saving, or even opening certain files. The problem is not always about your computer’s actual memory or disk space — it often stems from a corrupted font cache, a damaged document, or a conflict with add-ins. This article explains the most common causes and provides clear, step-by-step fixes to get Word working again.

Why Word Shows the Insufficient Memory or Disk Space Error

Word displays this error when it cannot load a font or allocate enough memory to render a document. The technical root cause is almost never a genuine lack of RAM or free hard drive space. Instead, the error arises from one of these four conditions:

Corrupted Font Cache

Windows stores font information in a cache file to speed up application loading. If this cache becomes corrupted, Word cannot enumerate or display fonts correctly. Word then interprets the failure as a memory or disk error because the font subsystem cannot allocate the required resources.

Damaged Document Structure

A .docx file is a ZIP archive containing XML files. If one of these internal XML files becomes corrupted — often due to an interrupted save or a network glitch — Word may fail to parse the document. The failure manifests as a memory error when Word attempts to load the damaged section.

Conflicting Add-ins or Templates

Third-party add-ins, especially those that manage fonts, macros, or document formatting, can consume memory and interfere with Word’s normal font-loading process. When an add-in holds a font handle open or mismanages memory allocation, Word reports an insufficient memory condition.

Outdated Graphics or Printer Drivers

Word uses the graphics driver and the default printer driver to render fonts and page layouts. An outdated or buggy driver can cause font-rasterization failures that Word misreports as a memory or disk problem.

Steps to Resolve the Insufficient Memory or Disk Space Error

Follow these methods in the order listed. Test if the error is resolved after each method before moving to the next.

Method 1: Restart Word and Windows

1. Close Word completely
   Click File > Exit. Do not just close the window — use the Exit command to ensure all Word processes end.
2. Restart your computer
   Click Start > Power > Restart. A full restart clears temporary files and resets the font cache in memory.
3. Open the same document again
   Double-click the file in File Explorer. If the error is gone, you had a transient glitch. If the error returns, continue to Method 2.

Method 2: Clear the Windows Font Cache

1. Close all Office applications
   Make sure Word, Excel, PowerPoint, and Outlook are closed.
2. Open the Services console
   Press Windows Key + R, type services.msc, and press Enter.
3. Stop the Windows Font Cache Service
   Scroll to Windows Font Cache Service. Right-click it and select Stop. Leave the Services window open.
4. Delete the cache file
   Open File Explorer and navigate to C:\Windows\ServiceProfiles\LocalService\AppData\Local. Delete the file named FontCache.dat. If you cannot see AppData, enable hidden items on the View tab.
5. Restart the service
   Return to the Services window. Right-click Windows Font Cache Service and select Start.
6. Restart your computer
   Restart Windows to regenerate a clean font cache. Open Word and check if the error is resolved.

Method 3: Open and Repair the Document

1. Open Word without the document
   Launch Word from the Start menu. Do not double-click the problematic file.
2. Use the Open and Repair command
   Click File > Open > Browse. Navigate to the document. Select it, but do not double-click. Click the dropdown arrow next to the Open button and choose Open and Repair.
3. Wait for the repair process
   Word will attempt to fix corruption in the document. If successful, the document opens. Immediately save it with a new name by pressing F12.
4. If Open and Repair fails
   Try inserting the damaged document into a new blank document: open a new blank document, click Insert > Object > Text from File, and select the damaged file. Word will import the recoverable content.

Method 4: Disable Word Add-ins

1. Open Word in Safe Mode
   Press Windows Key + R, type winword /safe, and press Enter. If Word opens without the error, an add-in is the cause.
2. Disable all add-ins
   Click File > Options > Add-ins. At the bottom of the dialog, next to Manage, select COM Add-ins and click Go. Uncheck every add-in in the list and click OK.
3. Restart Word normally
   Close Word and reopen it without the /safe switch. If the error is gone, re-enable add-ins one at a time to identify the culprit.

Method 5: Update Graphics and Printer Drivers

1. Open Device Manager
   Right-click the Start button and select Device Manager.
2. Update the display adapter driver
   Expand Display adapters. Right-click your graphics card and select Update driver. Choose Search automatically for drivers.
3. Set a default printer
   Open Settings > Bluetooth & devices > Printers & scanners. Select your default printer and click Set as default. If no printer is set, Word uses a generic driver that can trigger font errors.
4. Restart Word
   Restart Word and test the document.

If Word Still Shows the Error After the Main Fix

Word Shows the Error When Opening Any Document

If the error appears on every document, not just one, the problem is likely a corrupted Normal.dotm template. Close Word. In File Explorer, navigate to %appdata%\Microsoft\Templates. Rename Normal.dotm to Normal.old. Restart Word — it will create a fresh template.

Word Shows the Error Only When Using a Specific Font

A specific font file may be damaged. Open the Fonts folder by typing fonts in the Start menu search. Locate the font that triggers the error. Right-click it and select Delete. Reinstall the font by downloading it from a trusted source and double-clicking the downloaded file.

Word Displays the Error After a Windows Update

A Windows update may have changed the font cache or service behavior. Run the Windows Font Cache Service troubleshooting steps again (Method 2). If the error persists, uninstall the most recent update via Settings > Windows Update > Update history > Uninstall updates.

Font Cache Clearing Methods: Manual vs Automatic

Item	Manual Font Cache Clear	Automatic Font Cache Reset (Restart)
What it clears	Deletes FontCache.dat file and restarts the service	Only clears in-memory cache; does not delete the .dat file
Effectiveness for persistent errors	High — removes corrupted cached data	Low — corrupted data remains on disk
Time required	5 minutes	1 minute (restart)
When to use	Error returns after a restart	First occurrence of the error

You can now clear the font cache, repair damaged documents, disable conflicting add-ins, and update drivers to eliminate the insufficient memory or disk space error. Start with a simple restart, then move to the font cache method if the error persists. For ongoing prevention, keep Windows, Word, and your graphics drivers updated. As an advanced tip, you can create a one-click batch file to stop the font cache service, delete FontCache.dat, and restart the service automatically.