topic Re: SDK Clock-Pins tools give "Processor NCXN236 is not supported" in MCX Microcontrollers

SDK Clock-Pins tools give "Processor NCXN236 is not supported"

jmullen_condose — Mon, 11 Aug 2025 22:07:21 GMT

I have a new project I want to develop for an NCXN236 MCU. I loaded the SDK for the Dev Board and some of the example projects. under the DEVELOP tab, I can see the code as usual and expected. I started a New project also, and see the main() "Hello World" code and it compiles.

However, if I click on the Clocks, Pins or Peripherals tabs, then select the <Select Project> to any of the projects (my new one, or any of the SDK example projects), it displays "Downloading Processor NCXN236" for a short time then pops an ERROR box, that "Processor NCXN236 is not supported or data for the processor is not available"

I tried creating an SDK from online Builder and dropped it in, same issue. I cannot access Pins/Clocks to do basic setup for my new project.

I am using MCUXpresso IDE v25.6 [Build 136] [2025-06-27]

Re: SDK Clock-Pins tools give "Processor NCXN236 is not supported"

Alice_Yang — Tue, 12 Aug 2025 02:19:14 GMT

Hello @jmullen_condose

Is your PC connected to the internet? For the first time you use the Config tool, it needs to download some related data, so an internet connection is required. Next time no need internet.

If your PC is offline, please let me know.

Thank you.

Alice

Re: SDK Clock-Pins tools give "Processor NCXN236 is not supported"

jmullen_condose — Tue, 12 Aug 2025 12:09:30 GMT

Yes, PC is online. I went back to concurrent version of MCUxpresso v11.1 and imported the SDK for RT1050 and create new bare C project, and that works as expected. Opening the CLOCKs tab (for example) IDE proceeds to load the new data you mentioned, then the tab opens and works as expected. But then importing the MCNX236 SDK, it imports the SDK and adds to my SDK list, but opening the CLOCKs tab produces the error, even in V11.1

When I go to Import SDK, it system correctly performs a "Refresh SDK", so yes, Online is working.

I tried RT1050 and RT1107 in the current v25.6 MCUx and they also produces this same ERROR on trying to open CLOCKs or other tools tabs.

Re: SDK Clock-Pins tools give "Processor NCXN236 is not supported"

jmullen_condose — Tue, 12 Aug 2025 18:31:53 GMT

I have tested this again today, as well as trying to add an SDK for MCXA156VLL MCU, and same failure, although I am able to add the SDK itself and load Example Projects. Only the needed update to allow the various Tools Tabs to open, fail. I have this same issue in both IDE v11.1 as well as most recent 25.6 so it *seems* like a PC/connection issue but all the other connectivity is working to load the SDKs. I have disabled Norton AntiVirus and Firewall, etc. Still it fails.

Re: SDK Clock-Pins tools give "Processor NCXN236 is not supported"

Alice_Yang — Wed, 13 Aug 2025 02:59:47 GMT

Hi @jmullen_condose

Thanks for your reply.

I downloaded and installed the MCXpresso IDE v25.06, and the clock tool works well.

Please install IDE v25.06 again, then re-download the SDK for MCXN236 from the NXP website:

https://mcuxpresso.nxp.com/select

Then import the SDK into the IDE to test again.

Alice

Re: SDK Clock-Pins tools give "Processor NCXN236 is not supported"

jmullen_condose — Wed, 13 Aug 2025 09:09:20 GMT

Tried this and no luck, same issue. Ran the IDE "As Administrator" and bingo(!) clicking the Tools caused the download of the needed files and the tabs opened as expected. Therefore, the solution (in my case) was: "Run IDE -as admin-" and it worked. Once the files were downloaded, As Admin was no longer needed to continue to work as expected.