Legacy Update: Get back online, activate, and install updates on your legacy Windows PC

The Microsoft Online Services Sign-In Assistant provides end user sign-in capabilities to Microsoft Online Services, such as Office 365.

• The Microsoft Online Services Sign-In Assistant provides end user sign-in capabilities to Microsoft Online Services, such as Office 365. The MOS SIA installs client components that allow common applications, such as Microsoft Outlook and Lync, to authenticate to Microsoft Online Services. The MOS SIA can also provide an improved sign-in experience, such that end users can access Microsoft Online Services without having to re-enter their credentials (such as a user name or password). This download is intended for IT Professionals, for distribution to managed client systems as part of an Office 365 client deployment, via System Center Configuration Manager (SCCM) or similar software distribution systems. For users who are installing Office 365 by means of the Office 365 Desktop Setup application, this download is not necessary, because the MOS SIA is installed as part of the Desktop Setup process.

Files

Status: Deleted This download is no longer available on microsoft.com. The downloads below are archives provided by the Internet Archive Wayback Machine from the Microsoft Download Center prior to August 2020.

File	SHA1 Hash	Size
msoidcli_32bit.msi	f7887b16957f128bbe269391f4773ca3366a6430	1.86 MB
msoidcli_64bit.msi	8cf44473aba94729797be18da4f0b4bab0eebb73	2.90 MB

• Supported operating systems: Windows 7, Windows Server 2008, Windows Server 2008 R2, Windows Vista, Windows XP Service Pack 3, Windows Server 2003 Supported processor architectures: x86 and x64 for all supported operating systems

• 1.Ensure that the correct language is selected. If the correct language is not selected, select the correct language, and then click Go. 2.Click the Download button on this page to start the download. 3.Do one of the following: ◦To start the installation immediately, click Open or Run this program from its current location. ◦To copy the download to your computer for installation at a later time, click Save or Save this program to disk.