How to Disable Chat in Windows NT

Article ID: Q102419

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The information in this article applies to:

 - Microsoft Windows NT operating system, version 3.1
 - Microsoft Windows NT Advanced Server, version 3.1
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SUMMARY
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In Windows NT, it is possible to prevent other users on the network
from sending your machine Chat messages by changing entries in the
Registry Database using REGEDT32.EXE.

WARNING: Registration Information Editor (REGEDT32.EXE) is a very
powerful utility that allows you to directly change the Registry
Database. Using Registration Information Editor incorrectly can cause
serious problems, including hard disk corruption. It may be necessary
to reinstall the software to correct any problems. Microsoft does not
support changes made with Registration Information Editor. Use this
tool at your own risk.

MORE INFORMATION
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To disable Chat for a user in Windows NT, change the following key
value to zero (0):

   HKEY_CURRENT_USER\Software\Microsoft\NetDDE\DDE Trusted
   Shares\DDEDBi<unique number>\Chat$\StartApp

This prevents Chat from loading on your machine when another user
tries to send your machine a Chat message.

The computer attempting to send the message receives the following
message:

   <Machine Name> did not respond.

This setting is only for the current user of the machine. Each user on
the machine who wants to disable Chat must change the Registry entry.

Additional reference words: 3.10
KBCategory:
KBSubcategory: netsrv
