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Q168633: XGEN: When Do You Need a Client Access License (CAL)?

Article: Q168633
Product(s): Microsoft Exchange
Version(s): WINDOWS:4.0,5.0; winnt:4.0,5.0,5.5
Operating System(s): 
Keyword(s): kbusage exc4 exc5 exc55
Last Modified: 18-OCT-1999

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The information in this article applies to:

- Microsoft Exchange Macintosh client, versions 4.0, 5.0 
- Microsoft Exchange Windows 3.x client, versions 4.0, 5.0 
- Microsoft Exchange Windows 95/98 client, versions 4.0, 5.0 
- Microsoft Exchange Windows NT client, versions 4.0, 5.0 
- Microsoft Exchange Server, versions 4.0, 5.0, 5.5 
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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:

  Q151307 Client Access License (CAL)


Additional query words: permission

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Keywords          : kbusage exc4 exc5 exc55 
Technology        : kbHWMAC kbOSMAC kbExchangeSearch kbExchange500 kbExchange550 kbExchange400 kbExchangeClientSearch kbZNotKeyword kbZNotKeyword2 kbZNotKeyword3 kbExchange500Mac kbExchange400Mac kbExchange400NT kbExchange500NT kbExchange400Win95 kbExchange500Win95
Version           : WINDOWS:4.0,5.0; winnt:4.0,5.0,5.5
Issue type        : kbinfo

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