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What would cause message (121) "Operation restricted access denied" when trying to switch from Monitor Mode to Program mode using ProWORX NxT?

Published date: 31 July 2019

Issue
Error when switching from Monitor Mode to Programming Mode

Product Line
ProWORX NxT

Resolution
The most common cause of this error is a file that gets created called NXT.SYS and has to be deleted. You need to exit Proworx Nxt before deleting the NXT.SYS file and then launch it again after the file is deleted.


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