Uninstall hangs while attempting to stop driver


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Article ID: Q100003

The information in this article applies to:

  • Direct I/O, version 4.0, 4.1, 4.2, 4.3, 4.4


The uninstall command may hang during a attempt to stop the driver.


During uninstall the driver has to be stopped to be able to remove it. If a process is still accessing Direct I/O the stop operation will wait until this process has terminated. You have to stop the process manually to continue uninstallation.

Steps to reproduce problem

  1. Start a 16bit application e.g. the Black Screen Saver BLACK16.SCR
  2. Check the Windows NT Task Manager for existence of the process NTVDM.EXE
  3. Start the uninstallation of Direct I/O
  4. The uninstallation will hang or fail with an error message.
  5. Switch to the Windows NT Task Manager and kill the process NTVDM.EXE
  6. Now the uninstallation will run successfully.

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Last modified: 2018-04-24.
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