# Error when TotalSegmentator trying to install required Python packages: \`SSLError(SSLEOFError(8, ‘EOF occurred in violation of protocol (\_ssl.c:1129)’))\`

**URL:** <https://discourse.slicer.org/t/error-when-totalsegmentator-trying-to-install-required-python-packages-sslerror-ssleoferror-8-eof-occurred-in-violation-of-protocol-ssl-c-1129/34539>\
**Category:** Support\
**Tags:** totalsegmentator\
**Created:** [February 26, 2024, 11:42am UTC](https://discourse.slicer.org/t/error-when-totalsegmentator-trying-to-install-required-python-packages-sslerror-ssleoferror-8-eof-occurred-in-violation-of-protocol-ssl-c-1129/34539 "2024-02-26T11:42:10Z")\
**Posts on this page:** 1\
**Showing post:** 3

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**Author:** ![jamesobutler](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/jamesobutler/32/7511_2.png) [@jamesobutler](https://discourse.slicer.org/u/jamesobutler)\
**Post date:** [February 26, 2024, 4:38pm UTC](https://discourse.slicer.org/t/error-when-totalsegmentator-trying-to-install-required-python-packages-sslerror-ssleoferror-8-eof-occurred-in-violation-of-protocol-ssl-c-1129/34539/3 "2024-02-26T16:38:31Z")

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Having uninstalled Slicer 5.6.1 and deleted the entire directory:  
%LOCALAPPDATA%/slicer.org/Slicer 5.6.1

Then deleting my entire python pip cache at:  
%LOCALAPPDATA%/pip

Then deleting my TotalSegmentator cache at:  
%USERPROFILE%/.totalsegmentator

I reinstalled Slicer 5.6.1, installed the TotalSegmentator Slicer extension and then re-ran TotalSegmentator on the CTChest sample data set, I was successful running TotalSegmentator:

 ![image](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/1/4/1467d0070bc15a29ef8abe9155a8ba63424109fa.png)

@rnvwnvvir If you follow the same steps as I did below, you should be able to observe similar success.

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_[View the full topic](https://discourse.slicer.org/t/error-when-totalsegmentator-trying-to-install-required-python-packages-sslerror-ssleoferror-8-eof-occurred-in-violation-of-protocol-ssl-c-1129/34539)._