Knowledge Base

XGEN: When Do Exchange Users Need a Client Access License (CAL)?

Article ID: 168633

Article Last Modified on 10/28/2006

Microsoft Exchange Client 4.0 for Macintosh
Microsoft Exchange Client 5.0 for Macintosh
Microsoft Exchange Client 5.5
Microsoft Exchange Client 5.0
Microsoft Exchange Client 4.0
Microsoft Exchange Client 5.0
Microsoft Exchange Server 4.0 Standard Edition
Microsoft Exchange Server 5.0 Standard Edition
Microsoft Exchange Server 5.5 Standard Edition

This article was previously published under Q168633

SUMMARY

Any user who wants to access information on a computer running Microsoft Exchange Server requires a Client Access License (CAL) for Exchange. However, not all users of Microsoft Exchange clients require a Windows NT Server Client Access License (CAL).

MORE INFORMATION

How to determine if you need a Windows NT Server CAL.

If your client uses Windows NT Server for any of these basic networking features, a Windows NT Server CAL is required:

   File Sharing
   Printer Sharing
   Remote Access Services
   Mac Services

If your Exchange Client user is not using any of the above networking features of Windows NT Server, a Windows NT Server CAL is not required. If you use Windows NT Server strictly as an application server (that is, just to run Exchange) does not require a Windows NT Server CAL.

For additional information on Windows NT Server Client Access Licenses, please see the following article in the Microsoft Knowledge Base:

151307 Client Access License (CAL)

Additional query words: permission

Keywords: kbinfo kbusage KB168633