Microsoft Exchange 5.5

Exchange is a proprietary e-mail and groupware server software from Microsoft for Windows Server. The first version publicly sold was Exchange Server 4.0. The number 4.0 was used as it was a replacement for Microsoft Mail 3.x. At release, unlike other desktop/lan e-mail solutions it featured client/server communications rather than using file sharing, used a powerful messaging protocol, and stored all message and address book information in a database. It eventually evolved to include scheduling and many other functions. The Exchange Client (later Microsoft Outlook) supported rich text formatting, and the ability to create such things as e-mail forms.

Release notes

Exchange 5.5 changes from the use of the Exchange e-mail client to Microsoft Outlook.

Installation instructions

This key should work: 419-0015701

Product type
Application Chat PIM Server
Release date
User interface
Download count
2 (0 for release)


Download name Version Language Architecture File size Downloads
Microsoft Exchange Server 5.5 Enterprise Edition (ISO) 5.5 Enterprise Edition English 77.14MB 0
Microsoft Exchange Server 5.5 Service Pack 3 (ISO) 5.5 Service Pack 3 English 168.72MB 0
Microsoft Exchange Server 5.5 Service Pack 4 5.5 Service Pack 4 English 15.67MB 0
Microsoft Exchange Server 5.5 Service Pack 4 Rollup 5.5 Service Pack 4 Rollup English 1.95MB 0


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