May 3, 2016, update for Outlook 2010 (KB3115127)

Applies to: Microsoft Office 2010 Service Pack 2Microsoft Outlook 2010

This article describes update KB3115127 for Microsoft Outlook 2010, which was released on May 3, 2016. This update has a prerequisite.

Improvements and fixes

Fixes the following issue:

When you start Outlook 2010 in Office 365, Outlook 2010 displays the password dialog box that has the SMTP address as the user name. This issue occurs even if you have selected the Remember my credentials option, and the UPN differs from the SMTP address.

How to download and install the update

Microsoft Update

Use Microsoft Update to automatically download and install the update.

Download Center

This update is also available for manual download and installation from the Microsoft Download Center. If you're not sure what platform (32-bit or 64-bit) you're running, see Am I running 32-bit or 64-bit Office? Additionally, see more information about how to download Microsoft support files.

Update information


To apply this update, you must have Microsoft Office 2010 Service Pack 2 installed.

Note You may also have to apply Language Pack Service Pack 2 for any Language Packs that you previously installed.

Restart information

You may have to restart the computer after you install this update.


See the information about the standard terminology that's used to describe Microsoft software updates . The Office System TechCenter contains the latest administrative updates and strategic deployment resources for all versions of Office.

File Information

The global version of this update has the file attributes (or later file attributes) that are listed in the following table.