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"LDAP Provider 80070030 Reconnection Failed" Error Message When You Try to Reconnect to Mailbox

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When you try to reconnect to your Exchange Server mailbox, you may receive the following error message
LDAP Provider


Reconnection failed.
and the reconnection operation is unsuccessful.
This issue may occur if you use another account to connect to your mailbox and the account name contains Thai characters. The issue occurs because Lightweight Directory Access Protocol (LDAP) queries Active Directory by using the User32 API CharPrevW function, and this function does not recognize some Thai Unicode vowel characters. The User32 API CharPrevW function may not recognize the following Thai Unicode characters:

Service Pack Information

To resolve this problem, obtain the latest service pack for Microsoft Windows 2000. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:
260910 How to Obtain the Latest Windows 2000 Service Pack

Hotfix Information

A supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing this specific problem.

If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, submit a request to Microsoft Customer Service and Support to obtain the hotfix.

Note If additional issues occur or if any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, visit the following Microsoft Web site: Note The "Hotfix download available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language.The English version of this fix has the file attributes (or later) that are listed in the following table. The dates and times for these files are listed in coordinated universal time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time tool in Control Panel.
   Date         Time     Version             Size   File name   -----------------------------------------------------------   04-Mar-2003  19:12    5.0.2195.6678      42,768  Basesrv.dll   14-Feb-2003  12:49    5.0.2195.6660     222,992  Gdi32.dll   14-Feb-2003  12:49    5.0.2195.6656     710,928  Kernel32.dll   04-Mar-2003  19:12    5.0.2195.6669     333,072  Msgina.dll   31-Jan-2003  12:51    5.0.2195.6661      90,232  Rdpwd.sys   04-Mar-2003  19:12    5.0.2195.6680     380,176  User32.dll   04-Mar-2003  19:12    5.0.2195.6671     385,296  Userenv.dll   04-Mar-2003  19:08    5.0.2195.6680   1,620,208  Win32k.sys   03-Mar-2003  09:14    5.0.2195.6675     181,008  Winlogon.exe   14-Feb-2003  12:49    5.0.2195.6655     243,472  Winsrv.dll				

Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article. This problem was first corrected in Microsoft Windows 2000 Service Pack 4.
For additional information about how to obtain a hotfix for Windows 2000 Datacenter Server, click the article number below to view the article in the Microsoft Knowledge Base:
265173 The Datacenter Program and Windows 2000 Datacenter Server Product

Article ID: 816094 - Last Review: 10/26/2013 18:23:00 - Revision: 2.6

Microsoft Windows 2000 Advanced Server, Microsoft Windows 2000 Professional Edition, Microsoft Windows 2000 Server

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