Q: Start up disk full  message when using Microsoft Office

Ask on the Microsoft Mac forums since it's their software you're having issues with.

http://answers.microsoft.com/en-us/mac

Marky, Sometimes wacky file names can cause that (bad characters in the file names such as * & # and so on) If that is not the reason , do a complete reinstall of your Office, assuming you have the product key and install DVD for MS Office 2011. If you want directions, look here.

0. Be sure you have a good BU of your Mac

1. Find your Office 2011 DVD with the product key #.

(How to locate product keys

http://support.microsoft.com/kb/2279109

or here

http://office.about.com/od/MicrosoftOfficeMac/a/Best-3-Ways-To-Find-Microsoft-Of fice-For-Mac-Key-Codes.htm

)

2. Then remove Office according to MS instructions

http://support.microsoft.com/kb/2398768

or

https://support.office.com/en-us/article/Troubleshoot-Office-2011-for-Mac-issues -by-completely-uninstalling-before-you-reinstall-ba8d8d13-0015-4eea-b60b-7719c2c edd17?ui=en-US&rs=en-US&ad=US

Or go here to DianefromOregon's site for help removing Office 2011:

http://www.officeformachelp.com/2012/12/office-for-mac-2011-remove-office/

3. Reinstall Office 2011

4. Enter your Product #

5. Once Office 2011 is installed, update Office by going to Help menu within Word or Excel or PowerPoint and select Update.

The latest version of Office 2011 for the Mac is 14.6

• If you have trouble installing this update or using Office 2011 applications after you install this update, try the following:
  • Make sure that the Microsoft Office 2011 folder is located in the Applications folder on the startup volume. If it is at another location on your computer, move it to the Applications folder on your startup volume, and then try installing the update again.
  • Restart your computer and try installing the update again.
  • Make sure that the user account you use to authenticate the update installer is an administrator account. For more information about administrator accounts, see Mac Help.
  • Make sure that you downloaded the correct language version of the update for your copy of Office.
  • If you rename or modify any of the files in the Microsoft Office 2011 folder, you cannot install product updates. To correct this issue, drag the Microsoft Office 2011 folder to the Trash, and then reinstall Office 2011 from your original installation disk.
  • If you experience problems opening Office applications after you install this update, restart your computer. If you continue to experience problems after you restart, reinstall Office from your original installation disk, and then install this update again.
  •  
  • This note is updated as of January 18, 2016