# Tip for manual downloading of Extensions
**URL:** https://discourse.slicer.org/t/tip-for-manual-downloading-of-extensions/1556
**Category:** Support
**Created:** [November 29, 2017, 5:57pm UTC](https://discourse.slicer.org/t/tip-for-manual-downloading-of-extensions/1556 "2017-11-29T17:57:35Z")
**Posts on this page:** 14
**Page:** 1
### Author:  [@JohnK](https://discourse.slicer.org/u/JohnK)
#### Post date: [November 29, 2017, 5:57pm UTC](https://discourse.slicer.org/t/tip-for-manual-downloading-of-extensions/1556/1 "2017-11-29T17:57:35Z")
I really like 3DSlicer but since I am at a hospital environment IT can be very frustrating even though I have Admin privileges on my Win workstation. The standard Install Extensions is blocked by our hospital Proxy server and I get:
**You must be authenticated to access this URL.**
**URL: [http://slicer.kitware.com/midas3/slicerappstore?layout=empty&os=win&arch=amd64&revision=26654](http://slicer.kitware.com/midas3/slicerappstore?layout=empty&os=win&arch=amd64&revision=26654)**
I didn’t see any help on the forum so here is what I have learned to get around this.
Open a web browser to
[http://slicer.kitware.com/midas3/slicerappstore/](http://slicer.kitware.com/midas3/slicerappstore/)
Click the download of the extension and then save to a local drive you have full privileges.
Open the Extension Manager in 3DSlicer, click the ‘install Extensions’ tab
Click the wrench icon with arrowhead and pick install extension from file
Navigate and select that file you just downloaded.
Wait for a bit (you may not get a message that the extension has been installed …)
restart 3DSlicer
You can delete the file you just downloaded if you want.
done!
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### Author:  [@lassoan](https://discourse.slicer.org/u/lassoan)
#### Post date: [November 29, 2017, 6:41pm UTC](https://discourse.slicer.org/t/tip-for-manual-downloading-of-extensions/1556/2 "2017-11-29T18:41:14Z")
Thanks you for sharing this.
This question has come up a couple of times on the forum (for example [Cannot download extensions](https://discourse.slicer.org/t/cannot-download-extensions/584)), it’s interesting that it is not easy to find these posts. Googling “slicer manual download of extension” brings up the relevant page, too.
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### Author:  [@JohnK](https://discourse.slicer.org/u/JohnK)
#### Post date: [November 29, 2017, 7:28pm UTC](https://discourse.slicer.org/t/tip-for-manual-downloading-of-extensions/1556/3 "2017-11-29T19:28:34Z")
Yep, the method here did not work for me.
[https://www.slicer.org/wiki/Documentation/Nightly/SlicerApplication/ExtensionsManager#How\_to\_manually\_download\_an\_extension\_package.3F4](https://www.slicer.org/wiki/Documentation/Nightly/SlicerApplication/ExtensionsManager#How_to_manually_download_an_extension_package.3F4)
of course could be user error… Thanks for great support!
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### Author:  [@lassoan](https://discourse.slicer.org/u/lassoan)
#### Post date: [November 29, 2017, 7:55pm UTC](https://discourse.slicer.org/t/tip-for-manual-downloading-of-extensions/1556/4 "2017-11-29T19:55:08Z")
I think the necessary instructions were already described on the [page](https://www.slicer.org/wiki/Documentation/Nightly/SlicerApplication/ExtensionsManager#Installing_an_extension_without_network_connection) but it was not obvious to find it (the page is quite long). I’ve now added a link from the “How to manually install an extension package?” section to the relevant section above to make the instructions easier to find.
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### Author:  [@Saima](https://discourse.slicer.org/u/Saima)
#### Post date: [September 21, 2021, 4:04am UTC](https://discourse.slicer.org/t/tip-for-manual-downloading-of-extensions/1556/5 "2021-09-21T04:04:51Z")
I cant access the webpage. how to get authentication
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### Author:  [@Saima](https://discourse.slicer.org/u/Saima)
#### Post date: [September 21, 2021, 4:06am UTC](https://discourse.slicer.org/t/tip-for-manual-downloading-of-extensions/1556/6 "2021-09-21T04:06:00Z")
Hi JohnK,
I do not see any extension on the link provided.
Please share how can I have access to download extensions as the ectension manager not working.
Regards,
Saima Safdar
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### Author:  [@Saima](https://discourse.slicer.org/u/Saima)
#### Post date: [September 21, 2021, 4:07am UTC](https://discourse.slicer.org/t/tip-for-manual-downloading-of-extensions/1556/7 "2021-09-21T04:07:15Z")
Hi Andras,
Extension manager in 3D Slicer not working. how to install extensions.
for me this link not working
[http://slicer.kitware.com/midas3/slicerappstore/](http://slicer.kitware.com/midas3/slicerappstore/)
ANy help.
Regards,
Saima Safdar
---
### Author:  [@lassoan](https://discourse.slicer.org/u/lassoan)
#### Post date: [September 21, 2021, 12:23pm UTC](https://discourse.slicer.org/t/tip-for-manual-downloading-of-extensions/1556/8 "2021-09-21T12:23:58Z")
The extensions manager works now in latest Slicer Stable Release and latest Slicer Preview Release.
The old extensions server had to be shut down due to security vulnerabilities. You can now download extension packages manually from [here](https://slicer-packages.kitware.com/#collection/5f4474d0e1d8c75dfc70547e/folder/5f4474d0e1d8c75dfc705484).
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### Author:  [@Saima](https://discourse.slicer.org/u/Saima)
#### Post date: [September 23, 2021, 5:18am UTC](https://discourse.slicer.org/t/tip-for-manual-downloading-of-extensions/1556/9 "2021-09-23T05:18:46Z")
Hi Andras,
I wrote a module which was working fine in the older version slicer 4.11.0.2020.02.\_\_. The new stable version of slicer is reporting a problem
Processing started
error: [/home/saima/Downloads/Downloads/slicer/bin/SlicerApp-real] exit abnormally - Report the problem.
It crashes when I click apply button. I do not understand whats happening.
Regards,
Saima Safdar
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### Author:  [@lassoan](https://discourse.slicer.org/u/lassoan)
#### Post date: [September 23, 2021, 4:00pm UTC](https://discourse.slicer.org/t/tip-for-manual-downloading-of-extensions/1556/10 "2021-09-23T16:00:34Z")
Have you built Slicer and your extension on the same computer?
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### Author:  [@Saima](https://discourse.slicer.org/u/Saima)
#### Post date: [September 23, 2021, 10:13pm UTC](https://discourse.slicer.org/t/tip-for-manual-downloading-of-extensions/1556/11 "2021-09-23T22:13:27Z")
Hi Andras,
Its loadable scripted module. Doesnt need to build. I gave path in the modules to access it.
Could you please help.
Regards,
Saima Safdar
---
### Author:  [@lassoan](https://discourse.slicer.org/u/lassoan)
#### Post date: [September 23, 2021, 10:30pm UTC](https://discourse.slicer.org/t/tip-for-manual-downloading-of-extensions/1556/12 "2021-09-23T22:30:13Z")
Can you send a link to the line of your module that made the application crash? You can run your module line by line in the [Python debugger](https://github.com/SlicerRt/SlicerDebuggingTools).
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### Author:  [@lassoan](https://discourse.slicer.org/u/lassoan)
#### Post date: [September 26, 2021, 4:55am UTC](https://discourse.slicer.org/t/tip-for-manual-downloading-of-extensions/1556/13 "2021-09-26T04:55:09Z")
4 posts were split to a new topic: [TetrahedralMeshGenerator crash](https://discourse.slicer.org/t/tetrahedralmeshgenerator-crash/19860)
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### Author:  [@lassoan](https://discourse.slicer.org/u/lassoan)
#### Post date: [September 26, 2021, 4:52am UTC](https://discourse.slicer.org/t/tip-for-manual-downloading-of-extensions/1556/17 "2021-09-26T04:52:27Z")
A post was split to a new topic: [Show processing progress information in a module GUI](https://discourse.slicer.org/t/show-processing-progress-information-in-a-module-gui/19859)