This has been bothered me for a week after reading the forum for solution on this issue that also happened to me as well all of the sudden.

This happen with MCUXpressor IDE build v11.5.0. The problem happened after I reboot my PC and there was no upgrade or anything on my PC or my board. I checked the forum and the similar thing is happening to the other guy but my case is different because I did not connect to the JLink but via the mini USB on the board. Neither do I delete any JLink files. It just happened after I reboot my PC. I am not sure if the CMSIS-DAP device driver is corrupted or not because I was working on the USB DFU SDK program before that.
I need this to be resolved asap because I basically cannot work on anything under this condition. Please help.