# Extension manger app store is not available

**URL:** <https://discourse.slicer.org/t/extension-manger-app-store-is-not-available/7554>\
**Category:** Support\
**Tags:** extensions-manager\
**Created:** [July 12, 2019, 4:19pm UTC](https://discourse.slicer.org/t/extension-manger-app-store-is-not-available/7554 "2019-07-12T16:19:34Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![dittothat](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/dittothat/32/4148_2.png) [@dittothat](https://discourse.slicer.org/u/dittothat)\
**Post date:** [July 12, 2019, 4:19pm UTC](https://discourse.slicer.org/t/extension-manger-app-store-is-not-available/7554/1 "2019-07-12T16:19:34Z")

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[http://slicer.kitware.com/midas3/slicerappstore](http://slicer.kitware.com/midas3/slicerappstore) is not loading for me. I am trying to download an extension package manually following the instructions in the manual. I can’t figure out how to set up network proxy settings in the internal extension manager. Completely stuck at the moment.

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**Author:** ![dittothat](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/dittothat/32/4148_2.png) [@dittothat](https://discourse.slicer.org/u/dittothat)\
**Post date:** [July 12, 2019, 4:19pm UTC](https://discourse.slicer.org/t/extension-manger-app-store-is-not-available/7554/2 "2019-07-12T16:19:43Z")

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Tried different browsers and computers and networks.

Chrome times out after awhile, and I get this message:

# This Page Cannot Be Displayed

The system cannot communicate with the external server ( [slicer.kitware.com](http://slicer.kitware.com) ). The Internet server may be busy, may be permanently down, or may be unreachable because of network problems.

Please check the spelling of the Internet address entered. If it is correct, try this request later.

If you have questions, please contact your organization’s network administrator and provide the codes shown below.

Date: Fri, 12 Jul 2019 15:02:13 GMT  
Username:  
Source IP: 10.72.76.203  
URL: GET [http://slicer.kitware.com/midas3/slicerappstore](http://slicer.kitware.com/midas3/slicerappstore)  
Category: Computers and Internet  
Reason: UNKNOWN  
Notification: GATEWAY\_TIMEOUT

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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:** [July 12, 2019, 4:22pm UTC](https://discourse.slicer.org/t/extension-manger-app-store-is-not-available/7554/3 "2019-07-12T16:22:09Z")

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duplicate of [Extension app store not accessible (http://slicer.kitware.com/midas3/slicerappstore)](https://discourse.slicer.org/t/extension-app-store-not-accessible-http-slicer-kitware-com-midas3-slicerappstore/7550)

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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:** [July 12, 2019, 4:22pm UTC](https://discourse.slicer.org/t/extension-manger-app-store-is-not-available/7554/4 "2019-07-12T16:22:34Z")

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