Office Error 30179-28: Not Enough Disk Space Fix

A step-by-step Windows 11 and Windows 10 guide for Microsoft 365 installation error 30179-28.

What causes Error 30179-28?

This Microsoft 365 installation error can appear when the Windows system drive, usually C:, does not have enough usable free space for Office to download, extract and install its files.

This guide shows how to:

Check C: drive free space.
Confirm available disk space using Command Prompt.
Open Windows Temporary Files.
Review files before deleting them.
Clear the Recycle Bin and temporary folders.
Restart the Microsoft 365 installation.

Commands used

wmic logicaldisk get caption,freespace,size

fsutil volume diskfree C:

echo %ProgramFiles%

echo %ProgramFiles(x86)%

echo %TEMP%

Important safety warning

Do not select the Downloads category until you have reviewed and backed up the files stored there. Also check the Recycle Bin before permanently deleting anything.

Video chapters

00:00 — Microsoft 365 Error 30179-28 00:25 — What causes the installation error? 00:55 — Check C: drive free space 01:35 — Check disk space using CMD 02:10 — Open Windows Temporary Files 03:00 — Files you can normally select 04:05 — Files to review carefully 04:45 — Additional ways to free disk space 05:45 — Reinstall Microsoft 365 06:20 — Final checks and recommendations

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