Microsoft KB Archive/249250

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XADM: Proxy Addresses May Be Modified After Applying Windows NT Server Version 4.0 Service Pack 4

Article ID: 249250

Article Last Modified on 9/4/2007


  • Microsoft Exchange Server 5.5 Standard Edition

This article was previously published under Q249250


After you apply Windows NT Server version 4.0 Service Pack 4 (and later), the proxy addresses for directory entries that contain the following two Eastern European characters are modified to random values:

  • The Latin small letter z with caron (unicode 017e) is no longer converted to z.
  • The Latin capital letter Z with caron (unicode 017d) is no longer converted to Z.


In Windows NT Server 4.0 Service Pack 4 (and later), the two characters in the "Symptoms" section of this article from CP 1250 (Central Europe) have been added to CP 1252 (Latin I).

Microsoft official codepage definitions can be found at the following Web site:


To resolve this problem, obtain the latest service pack for Exchange Server 5.5. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:

191014 XGEN: How to Obtain the latest Exchange Server 5.5 Service Pack


Microsoft has confirmed that this is a problem in Microsoft Exchange Server version 5.5. This problem was first corrected in Exchange Server 5.5 Service Pack 4.

Additional query words: CP1250 CP1252 generator

Keywords: kbbug kbexchange550presp4fix kbexchange550sp4fix kbfix kbqfe KB249250