Browse FAQs

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

Error when switching from Monitor Mode to Programming Mode

Product Line

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.

Was this helpful?

What can we do to improve the information ?

Can't find what you are looking for?

Reach out to our customer care team to receive information on technical support, assistance for complaints and more.