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'ProWORX 32' returns 'Err401' upon connecting to the PLC in Combined mode after updating to service pack 1.

Goals and Symptoms

'ProWORX 32' returns 'Err401' error upon connecting to the PLC in Combined mode,
after updating to Service Pack 1..

Facts and Changes

ProWORX 32 version 2.1, SP1

Causes and Fixes

If you try to connect to the PLC using 'Combined' mode after updating to Service Pack 1, the following
error could be returned. The error 'Server Busy' might also get returned. When this happens,
'ProWORX 32' will close out after 'OK' is clicked on.



This will happen if Service Pack 1 has been installed on an un-patched installation of ProWORX 32
version 2.1.

To resolve the issue:

  • Insert the ProWORX 32 version 2.1 CD and perform a repair.
  • Reboot the PC.
  • Apply patch A (The CD for patch is included with the ProWORX 32 version 2.1 installation CD.)
  • Install the Service Pack 1.
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