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

 Last reviewed: January 6, 1998
Article ID: Q168633
The information in this article applies to:
  • Microsoft Exchange Macintosh client, versions 4.0 and 5.0
  • Microsoft Exchange Windows 3.x client, versions 4.0 and 5.0
  • Microsoft Exchange Windows 95 client, versions 4.0 and 5.0
  • Microsoft Exchange Windows NT client, versions 4.0 and 5.0
  • Microsoft Exchange Server versions 4.0 and 5.0

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: 

   ARTICLE-ID: Q151307
   TITLE     : Client Access License (CAL)

Additional query words: permission
Keywords : XGen kbusage
Version : WinNT:4.0,5.0;Win95:4.0,5.0;WINDOWS:4.0,5.0
Platform : Win95 WINDOWS winnt
Issue type : kbinfo
Solution Type : Info_Provided

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Last reviewed: January 6, 1998
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