# When I try to start 3DSlicer, the program says that I dont have MRMLLogic. 

**URL:** <https://discourse.slicer.org/t/when-i-try-to-start-3dslicer-the-program-says-that-i-dont-have-mrmllogic/16526>\
**Category:** Support\
**Created:** [March 13, 2021, 11:52pm UTC](https://discourse.slicer.org/t/when-i-try-to-start-3dslicer-the-program-says-that-i-dont-have-mrmllogic/16526 "2021-03-13T23:52:27Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![JorgeCantu](https://avatars.discourse-cdn.com/v4/letter/j/919ad9/32.png) [@JorgeCantu](https://discourse.slicer.org/u/JorgeCantu)\
**Post date:** [March 13, 2021, 11:52pm UTC](https://discourse.slicer.org/t/when-i-try-to-start-3dslicer-the-program-says-that-i-dont-have-mrmllogic/16526/1 "2021-03-13T23:52:27Z")

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Operating system: Windows 7  
Slicer version: 4.11.20210226  
Expected behavior: Start without problems  
Actual behavior: It doesn´t run - “MRMLLogic is missing”

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**Author:** ![lassoan](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/lassoan/32/13_2.png) [@lassoan](https://discourse.slicer.org/u/lassoan)\
**Post date:** [March 14, 2021, 4:04am UTC](https://discourse.slicer.org/t/when-i-try-to-start-3dslicer-the-program-says-that-i-dont-have-mrmllogic/16526/2 "2021-03-14T04:04:05Z")

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Windows 7 is not supported (see more details [here](https://slicer.readthedocs.io/en/latest/user_guide/getting_started.html#system-requirements)), but if you post here your application log (menu: Help / Report a bug) then we can have a look if there is any obvious problem that may be easy to address.

Slicer should work on computers that are bought in the past 5 years and run a current version of Windows/Linux/macOS, but if you cannot get one then you can run Slicer on a virtual machine in the cloud, for example using the free Binder service:

> **[GitHub: slicer/SlicerNotebooks/master](https://mybinder.org/v2/gh/slicer/SlicerNotebooks/master?filepath=SlicerWeb.ipynb)**
>
> Click to run this interactive environment. From the Binder Project: Reproducible, sharable, interactive computing environments.