Q. Multiple users cannot print from 32-bit applications on a 64-bit operating system by using the runas command?

When you attempt to use the RunAs command with different user accounts to print from 32-bit applications on a 64-bit version of Windows, you cannot.

This behavior occurs because the system uses Splwow64.exe to translate between the 32-bit application and driver model of the 64-bit operating system, and Splwow64.exe only remains in memory for a short period when finished.

To workaround this problem, either don't use Runas or alter the time-out.

To alter the time-out:

1. Open a CMD.EXE window.

2. Type the following command and press Enter:

REG ADD "HKLM\System\CurrentControlSet\Control\Print" /V SplWOW64TimeOut /T REG_DWORD /F /D

Where is the number of minutes the system should wait before unloading the Splwow64.exe process.

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