# \[Linux\] Opening extension manager makes slicer stuck

**URL:** https://discourse.slicer.org/t/linux-opening-extension-manager-makes-slicer-stuck/23651
**Category:** Support
**Tags:** extensions-manager
**Created:** [May 31, 2022, 1:42pm UTC](https://discourse.slicer.org/t/linux-opening-extension-manager-makes-slicer-stuck/23651 "2022-05-31T13:42:08Z")
**Posts on this page:** 1
**Showing post:** 4

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### Author: ![pieper](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/pieper/32/8_2.png) [@pieper](https://discourse.slicer.org/u/pieper)
#### Post date: [June 1, 2022, 1:40pm UTC](https://discourse.slicer.org/t/linux-opening-extension-manager-makes-slicer-stuck/23651/4 "2022-06-01T13:40:11Z")

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I don’t work in an institution that uses proxies so I don’t have personal experience either, but you may be able to ask around to see if others have faced issues like this. From what I hear each configuration is a bit different and sometimes things need to be tweaked at the IT-team level. This post may help:

> [@Using slicer behind proxy](https://discourse.slicer.org/t/using-slicer-behind-proxy/6545):
>
> We are behind a corporate proxy, and more and more this creates issues with sample set downloads though slicer. E.g., this is the contents of the mrhead.nrrd when I use the sample data: This windows workstation is already configured to use specified proxy. Is there way to set this proxy explicitly from .slicerrc.py? Proxy Server Use Required Internet Access requires the use of a web proxy server. Please configure your web browser to automatically detect web proxy settings. For assis…

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