Difficulty saving files with Word for Mac

Try this sequence for Word for Mac save problems:

1. Update Office first
   • Open any Office app.
   • Go to Help > Check for Updates.
   • Enable automatic updates if available, then install all updates.
   • This is the first recommended fix for save, AutoRecover, copy/paste, and disk-related save errors.
2. Test saving to a local folder
   • In Word, use File > Save As and try saving to a folder on the Mac such as Desktop or Documents.
   • If local save works but iCloud does not, the issue is likely with the online/location side rather than basic Word saving.
   • Online save locations can vary in the Save As dialog depending on Office sign-in status, macOS permissions, OneDrive sync settings, or organizational configuration.
3. If Word shows upload/save conflict banners
   • If Word shows Upload Failed: Resolve Conflict, select Resolve.
   • Use Next on the Conflicts tab, then accept or reject each change.
   • Close the conflict view after all changes are resolved.
   • If Word shows Upload Pending, leave Word open with AutoSave turned on so it can retry saving in the background.
4. Reset Word preferences
   • Warning: this removes custom preferences such as keyboard shortcuts, toolbar changes, or dictionaries.
   • Quit all programs.
   • In Finder, open Home > Library. On macOS 10.7 or later, use Go while holding Option, then choose Library.
   • Open Preferences and move com.microsoft.Word.plist to the desktop.
   • Open the Microsoft folder in Preferences and move com.microsoft.Word.prefs.plist to the desktop. If Service Pack 2 is installed in older Word versions, use Application Support > Microsoft instead.
   • Start Word and test saving.
   • If the issue is gone, quit Word and return one file at a time to identify the corrupt preference file.
5. Reset the Normal template if needed
   • Quit all programs.
   • Go to Home > Library > Application Support > Microsoft > Office > User Templates.
   • Move Normal.dotm to the desktop.
   • Start Word and test saving.
   • If saving works, the template was likely the cause.
6. If the error mentions a serious disk error
   • Update Office if not already done.
   • That error can occur when Word creates a temporary file during save or AutoSave and something interrupts the replacement process.
7. Important limitation to know
   • Even with AutoRecover enabled, files should still be saved frequently to avoid data loss.

References:

• Save a file in Office for Mac | Microsoft Support
• Word for Mac error: "Microsoft Word has encountered a problem and needs to close" | Microsoft Support
• There is a serious disk error on when attempting to save, copy and paste or create auto recovery files in Office for Mac
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• Fixes or workarounds for recent issues in Word for Mac | Microsoft Support