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µVISION DEBUGGER: RTXv5 threads are not shown in Call Stack+Locals

Information in this knowledgebase article applies to:

  • MDK v5.27 and older versions
  • CMSIS pack v5.5.1


After upgrading my MDK to v5.27 and the CMSIS pack to v5.5.1, all RTXv5 user threads defined in my program are not shown in the "Call Stack + Locals" debug window in µVision. But these threads are correctly shown in the "RTX RTOS" Component Viewer debug window. How can I resolve this issue?


This is a known issue in MDK v5.27 when the CMSIS pack v5.5.1 is used. The RTX object identifiers haven been changed in CMSIS v5.5.1, which leads to this issue that "Call Stack + Locals" cannot recognize these RTXv5 threads properly.


The patch provided in this article can fix this issue. Download the attached UV4.exe patch file from this article and replace the original UV4.exe located in C:\Keil_v527\UV4\


This bug fix will be included in MDK v5.28 and newer versions.



Request the files attached to this knowledgebase article.


The following Discussion Forum threads may provide information related to this topic.

Last Reviewed: Monday, April 1, 2019

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