Windows Update error 51F

If you receive Windows Update error 51F while trying to install updates, the Local Installation Source (LIS) for Microsoft Office 2003 products is corrupted. LIS is the software that Office 2003 products use to install programs and updates for Office programs.

For more information, see this Knowledge Base article on the Microsoft Support website, or go to the Microsoft Answers website for more assistance.

Error codes this applies to:

  • WindowsUpdate_0000051f

  • WindowsUpdate_051f

  • 051f

  • 0x0000051f