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Domino R5 Server Crash in NXPCDM.exe when using Digi Boards Domino R5 Server Crash in NXPCDM.exe when using Digi Boards Problem
Your Domino R5 server is using Digi's various models of multiple port serial
boards and the server is crashing on nxpcdmn.exe. In some cases the server
does not crash; however, the modems become unresponsive.
Solution
While this matter is currently still under investigation by Lotus Quality
Engineering and Digi, it is recommended to add the following parameter to the
notes.ini file:
XPC_DISABLE_IOCP=1
This
parameter disables XPC from using I/O completion ports. When this parameter is
set to 1, XPC does not use I/O completion ports (which is the pre-R5 threading
model) and when set to 0, XPC does use I/O completion ports (the R5 threading
model). There should be no negative impact on the server's operation in either
case given that there are much less XPC ports active at any one time than, for
example, LAN ports.
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