# The SlicerWthSlicerRT executable file doesn't work

**URL:** <https://discourse.slicer.org/t/the-slicerwthslicerrt-executable-file-doesnt-work/24062>\
**Category:** Development\
**Tags:** build, slicerrt\
**Created:** [June 27, 2022, 6:12am UTC](https://discourse.slicer.org/t/the-slicerwthslicerrt-executable-file-doesnt-work/24062 "2022-06-27T06:12:54Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Mrwa\_Awoda](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/mrwa_awoda/32/10236_2.png) [@Mrwa\_Awoda](https://discourse.slicer.org/u/Mrwa_Awoda)\
**Post date:** [June 27, 2022, 6:12am UTC](https://discourse.slicer.org/t/the-slicerwthslicerrt-executable-file-doesnt-work/24062/1 "2022-06-27T06:12:54Z")

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OP: Windows 10  
3D Slicer 4.13  
The build process of SlicerRT extension completed with no errors, but the executable file (SlicerWithSlicerRT) won’t open with me. would you tell me what could be wrong here?

![image](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/c/3/c323d966e263c708f050d90e3db35e973fd09797.png)

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**Author:** ![edwardwang1](https://avatars.discourse-cdn.com/v4/letter/e/858c86/32.png) [@edwardwang1](https://discourse.slicer.org/u/edwardwang1)\
**Post date:** [July 19, 2022, 4:46pm UTC](https://discourse.slicer.org/t/the-slicerwthslicerrt-executable-file-doesnt-work/24062/2 "2022-07-19T16:46:59Z")

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I am experiencing the same issue using Slicer 5.1 Will let you know if I get around it.

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**Author:** ![edwardwang1](https://avatars.discourse-cdn.com/v4/letter/e/858c86/32.png) [@edwardwang1](https://discourse.slicer.org/u/edwardwang1)\
**Post date:** [July 19, 2022, 5:07pm UTC](https://discourse.slicer.org/t/the-slicerwthslicerrt-executable-file-doesnt-work/24062/3 "2022-07-19T17:07:45Z")

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I was able to get it to work by restarting my computer - maybe I originally had two many Slicer instances open before?