Semi-Annual Channel (Targeted)

December 12, 2017
Version 1708 (Build 8431.2131)




Note: First Release for Deferred Channel is now named Semi-Annual Channel (Targeted).

Excel: Security updates

This channel release contains security updates covered in the following CVEs:


Excel: Non-security updates

This channel release contains the following non-security updates:

  • Fix an issue where the user incorrectly sees a "catastrophic failure" error message when opening an Office 2007 or older workbook (.xls or .xla) with macros.
  • Fix an issue where opening a workbook from the command line might result in the loss of rich text formatting in a cell.

Outlook: Security updates

This channel release contains security updates covered in the following CVEs:


PowerPoint: Security updates

This channel release contains security updates covered in the following CVEs:

  • CVE-2017-11934: Microsoft PowerPoint Information Disclosure Vulnerability

Project: Non-security updates

This channel release contains the following non-security updates:

  • Fix an issue an issue where project level custom field data can get lost on save.
  • Fix an issue where a failed save can corrupt a file and cause Project to crash on open.
  • Fix an issue where opening a project plan could lead to a crash.

Word: Security updates

This channel release contains security updates covered in the following advisories:



Source: Office 365 client update channel releases

See also: Version and build numbers of update channel releases - Office Support