# Unable to load slicer extension website
**URL:** https://discourse.slicer.org/t/unable-to-load-slicer-extension-website/17554
**Category:** Support
**Created:** [May 10, 2021, 10:26pm UTC](https://discourse.slicer.org/t/unable-to-load-slicer-extension-website/17554 "2021-05-10T22:26:44Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@banderies](https://discourse.slicer.org/u/banderies)
#### Post date: [May 10, 2021, 10:26pm UTC](https://discourse.slicer.org/t/unable-to-load-slicer-extension-website/17554/1 "2021-05-10T22:26:44Z")
I have been trying to load the slicer extension website via the extension manager and manually via [@KitwareMedical/slicer-extensions-webapp](https://slicer.kitware.com/midas3/slicerappstore). Initially, it would only load on my Mac and not on my Linux installation, but now I can’t get it to load anywhere on multiple networks. Is this a known problem? I have attached a screenshot of the error.
Thanks,
Barrett
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### Author:  [@pieper](https://discourse.slicer.org/u/pieper)
#### Post date: [May 10, 2021, 10:47pm UTC](https://discourse.slicer.org/t/unable-to-load-slicer-extension-website/17554/2 "2021-05-10T22:47:49Z")
Thanks for the report. Probably this is expected and due to the server upgrades:
> [@Upcoming downtime for download.slicer.org and extension manager due to package server transition](https://discourse.slicer.org/t/upcoming-downtime-for-download-slicer-org-and-extension-manager-due-to-package-server-transition/17444):
>
> Hi all: Over the next two weeks, the Slicer development team at Kitware will be transitioning to new backend servers for hosting the Slicer installer packages and extensions. We are moving to a server built on the newer Girder platform for the backend and a vue.js based web application for the frontend. This will address EOL issues with the infrastructure, and significantly improve the download / extension manager experience for users. As a result of this ongoing upgrade, during the next two…