home *** CD-ROM | disk | FTP | other *** search
- DOCUMENT:Q101721 04-NOV-1993 [W_NT]
- TITLE :Disconnecting Null Session Disconnects Normal Sessions Too
- PRODUCT :Windows NT
- PROD/VER:3.10
- OPER/SYS:WINDOWS
- KEYWORDS:
-
- --------------------------------------------------------------------
- The information in this article applies to:
-
- - Microsoft Windows NT operating system version 3.1
- - Microsoft Windows NT Advanced Server version 3.1
- --------------------------------------------------------------------
-
- SUMMARY
- =======
-
- If Server Manager is run on a server, a particular client has both
- normal and null sessions connected to that server, and the client has
- files opened over the normal session, telling Server Manager to
- disconnect the null session disconnects both sessions with no warning
- about the open files.
-
- RESOLUTION
- ==========
-
- Be very careful when disconnecting null sessions. If you really need
- to disconnect \\CLIENT from \\SERVER, disconnect all normal (non-null)
- sessions first. This will give you the appropriate warnings about open
- files.
-
- MORE INFORMATION
- ================
-
- Two types of sessions can be established between computers. Normal
- sessions have a user name and computer name associated with the
- client, and file operations occur over normal sessions. Null sessions
- have only a computer name (no user name), and null sessions are used
- for administrative purposes.
-
- Steps to Reproduce Problem
- --------------------------
-
- Assume that \\CLIENT has both normal and null sessions established
- with \\SERVER. Also assume that \\CLIENT has one or more files opened
- over the normal session, but no files opened over the null session.
-
- 1. Run Server Manager and choose Properties from the Computer menu for
- \\SERVER, and choose Users.
-
- 2. Select the null session in the Connected Users area. The null
- session has a blank User column.
-
- 3. Choose Disconnect. You will get the following warning:
-
- Are you sure you want to disconnect USER from all connected
- resources?
-
- Choosing Yes will disconnect \\CLIENT from \\SERVER, closing any open
- files. Note that the warning makes no mention of open files.
-
- Additional reference words: 3.10
- KBCategory:
- KBSubCategory: NETSRV NTAP
-
- =============================================================================
-
- THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS
- PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS
- ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES
- OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO
- EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR
- ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL,
- CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF
- MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE
- POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION
- OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES
- SO THE FOREGOING LIMITATION MAY NOT APPLY.
-
- Copyright Microsoft Corporation 1993.