# New extension manager and issues with corporate certificates

**URL:** https://discourse.slicer.org/t/new-extension-manager-and-issues-with-corporate-certificates/19361
**Category:** Support
**Tags:** extensions-manager
**Created:** [August 25, 2021, 6:39pm UTC](https://discourse.slicer.org/t/new-extension-manager-and-issues-with-corporate-certificates/19361 "2021-08-25T18:39:59Z")
**Posts on this page:** 1
**Showing post:** 1

<div class="post-metadata">

### Author: ![muratmaga](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/muratmaga/32/3622_2.png) [@muratmaga](https://discourse.slicer.org/u/muratmaga)
#### Post date: [August 25, 2021, 6:39pm UTC](https://discourse.slicer.org/t/new-extension-manager-and-issues-with-corporate-certificates/19361/1 "2021-08-25T18:39:59Z")

</div>

Today I downloaded a new preview version, and tried to install MoniaLabel and SlicerMorph on my work computers, and encountered this error:

```auto

Mixed Content: The page at 'https://extensions.slicer.org/catalog/All/30133/win?q=' was loaded over HTTPS, but requested an insecure image 'http://www.example.com/Slicer/Extensions/BreastImplantAnalyzer.png'. This content should also be served over HTTPS.

Mixed Content: The page at 'https://extensions.slicer.org/catalog/All/30133/win?q=' was loaded over HTTPS, but requested an insecure image 'http://www.slicer.org/slicerWiki/images/b/b9/ChangeTracker_logo.png'. This content should also be served over HTTPS.

Mixed Content: The page at 'https://extensions.slicer.org/catalog/All/30133/win?q=' was loaded over HTTPS, but requested an insecure image 'http://www.example.com/Slicer/Extensions/CleverSeg.png'. This content should also be served over HTTPS.

Mixed Content: The page at 'https://extensions.slicer.org/catalog/All/30133/win?q=' was loaded over HTTPS, but requested an insecure image 'http://www.slicer.org/slicerWiki/images/e/e1/CornerAnnotationIcon.png'. This content should also be served over HTTPS.

Mixed Content: The page at 'https://extensions.slicer.org/catalog/All/30133/win?q=' was loaded over HTTPS, but requested an insecure image 'http://www.slicer.org/slicerWiki/images/b/b7/CurveMakerIcon.png'. This content should also be served over HTTPS.

Mixed Content: The page at 'https://extensions.slicer.org/catalog/All/30133/win?q=' was loaded over HTTPS, but requested an insecure image 'http://slicer.org/slicerWiki/images/9/92/DSC_logo_Resized.png'. This content should also be served over HTTPS.

Mixed Content: The page at 'https://extensions.slicer.org/catalog/All/30133/win?q=' was loaded over HTTPS, but requested an insecure image 'http://www.slicer.org/slicerWiki/images/a/ac/ErodeDilateLabelIcon.png'. This content should also be served over HTTPS.

Mixed Content: The page at 'https://extensions.slicer.org/catalog/All/30133/win?q=' was loaded over HTTPS, but requested an insecure image 'http://www.slicer.org/slicerWiki/images/1/16/FilmDosimetry_Logo_128x128.png'. This content should also be served over HTTPS.

Mixed Content: The page at 'https://extensions.slicer.org/catalog/All/30133/win?q=' was loaded over HTTPS, but requested an insecure image 'http://www.slicer.org/slicerWiki/images/f/f1/GelDosimetry_Logo_128x128.png'. This content should also be served over HTTPS.

Mixed Content: The page at 'https://extensions.slicer.org/catalog/All/30133/win?q=' was loaded over HTTPS, but requested an insecure image 'http://www.example.com/Slicer/Extensions/GraphCutSegment.png'. This content should also be served over HTTPS.

Mixed Content: The page at 'https://extensions.slicer.org/catalog/All/30133/win?q=' was loaded over HTTPS, but requested an insecure image 'http://www.slicer.org/slicerWiki/images/a/a7/GyroGuide.png'. This content should also be served over HTTPS.

Mixed Content: The page at 'https://extensions.slicer.org/catalog/All/30133/win?q=' was loaded over HTTPS, but requested an insecure image 'http://www.slicer.org/slicerWiki/images/e/e5/QuickToolsLogo.png'. This content should also be served over HTTPS.

Mixed Content: The page at 'https://extensions.slicer.org/catalog/All/30133/win?q=' was loaded over HTTPS, but requested an insecure image 'http://wiki.slicer.org/slicerWiki/images/f/f6/IntensitySegmenterIcon.png'. This content should also be served over HTTPS.

Mixed Content: The page at 'https://extensions.slicer.org/catalog/All/30133/win?q=' was loaded over HTTPS, but requested an insecure image 'http://www.slicer.org/slicerWiki/images/5/56/LAScarSegmenter.png'. This content should also be served over HTTPS.

Mixed Content: The page at 'https://extensions.slicer.org/catalog/All/30133/win?q=' was loaded over HTTPS, but requested an insecure image 'http://www.slicer.org/slicerWiki/images/0/08/LongitudinalPETCTLogo.png'. This content should also be served over HTTPS.

Mixed Content: The page at 'https://extensions.slicer.org/catalog/All/30133/win?q=' was loaded over HTTPS, but requested an insecure image 'http://www.slicer.org/slicerWiki/index.php/File:ModelClipIcon.png'. This content should also be served over HTTPS.

Mixed Content: The page at 'https://extensions.slicer.org/catalog/All/30133/win?q=' was loaded over HTTPS, but requested an insecure image 'http://slicer.org/slicerWiki/images/4/43/Slicer4ExtensionModelToModelDistance.png'. This content should also be served over HTTPS.

Mixed Content: The page at 'https://extensions.slicer.org/catalog/All/30133/win?q=' was loaded over HTTPS, but requested an insecure image 'http://www.slicer.org/slicerWiki/images/2/2e/OpenCAD.PNG'. This content should also be served over HTTPS.

Mixed Content: The page at 'https://extensions.slicer.org/catalog/All/30133/win?q=' was loaded over HTTPS, but requested an insecure image 'http://www.slicer.org/slicerWiki/images/a/ac/PAAlogo-small.png'. This content should also be served over HTTPS.

Mixed Content: The page at 'https://extensions.slicer.org/catalog/All/30133/win?q=' was loaded over HTTPS, but requested an insecure image 'http://www.slicer.org/slicerWiki/images/2/21/PerkTutorLogo.png'. This content should also be served over HTTPS.

Mixed Content: The page at 'https://extensions.slicer.org/catalog/All/30133/win?q=' was loaded over HTTPS, but requested an insecure image 'http://www.slicer.org/slicerWiki/images/b/b1/DPetBrainQuantification.png'. This content should also be served over HTTPS.

Mixed Content: The page at 'https://extensions.slicer.org/catalog/All/30133/win?q=' was loaded over HTTPS, but requested an insecure image 'http://www.slicer.org/slicerWiki/images/a/a7/Portplacement_icon.png'. This content should also be served over HTTPS.

Mixed Content: The page at 'https://extensions.slicer.org/catalog/All/30133/win?q=' was loaded over HTTPS, but requested an insecure image 'http://wiki.slicer.org/slicerWiki/images/d/d6/ResectionPlannerLogo.png'. This content should also be served over HTTPS.

Mixed Content: The page at 'https://extensions.slicer.org/catalog/All/30133/win?q=' was loaded over HTTPS, but requested an insecure image 'http://viewvc.slicer.org/viewvc.cgi/Slicer4/trunk/Extensions/Testing/SNRMeasurement/SNRMeasurement.png?revision=21745&view=co'. This content should also be served over HTTPS.

Mixed Content: The page at 'https://extensions.slicer.org/catalog/All/30133/win?q=' was loaded over HTTPS, but requested an insecure image 'http://www.na-mic.org/Wiki/images/a/ad/Spharm-pdm-icon.png'. This content should also be served over HTTPS.

Mixed Content: The page at 'https://extensions.slicer.org/catalog/All/30133/win?q=' was loaded over HTTPS, but requested an insecure image 'http://www.slicer.org/slicerWiki/images/b/ba/SegAidedRegSquareFocus128.png'. This content should also be served over HTTPS.

Mixed Content: The page at 'https://extensions.slicer.org/catalog/All/30133/win?q=' was loaded over HTTPS, but requested an insecure image 'http://www.slicer.org/slicerWiki/images/5/5b/Slicer-Wasp.png'. This content should also be served over HTTPS.

Mixed Content: The page at 'https://extensions.slicer.org/catalog/All/30133/win?q=' was loaded over HTTPS, but requested an insecure image 'http://raw.githubusercontent.com/SlicerDMRI/slicerdmri.github.io/master/images/DMRI_3D_SLICER-icon.png'. This content should also be served over HTTPS.

Mixed Content: The page at 'https://extensions.slicer.org/catalog/All/30133/win?q=' was loaded over HTTPS, but requested an insecure image 'http://raw.githubusercontent.com/QIICR/SlicerDevelopmentToolbox/master/Resources/Icons/SlicerDevelopmentToolbox.png'. This content should also be served over HTTPS.

Mixed Content: The page at 'https://extensions.slicer.org/catalog/All/30133/win?q=' was loaded over HTTPS, but requested an insecure image 'http://www.slicer.org/slicerWiki/images/f/ff/SlicerHeart_Logo_128x128.png'. This content should also be served over HTTPS.

Mixed Content: The page at 'https://extensions.slicer.org/catalog/All/30133/win?q=' was loaded over HTTPS, but requested an insecure image 'http://www.slicer.org/slicerWiki/images/2/2b/SlicerIGTLogo.png'. This content should also be served over HTTPS.

Mixed Content: The page at 'https://extensions.slicer.org/catalog/All/30133/win?q=' was loaded over HTTPS, but requested an insecure image 'http://www.example.com/Slicer/Extensions/SlicerNetstim.png'. This content should also be served over HTTPS.

Mixed Content: The page at 'https://extensions.slicer.org/catalog/All/30133/win?q=' was loaded over HTTPS, but requested an insecure image 'http://wiki.slicer.org/slicerWiki/images/8/87/SlicerProstate_Logo_1.0_128x128.png'. This content should also be served over HTTPS.

Mixed Content: The page at 'https://extensions.slicer.org/catalog/All/30133/win?q=' was loaded over HTTPS, but requested an insecure image 'http://www.slicer.org/slicerWiki/images/2/29/SlicerRT_Logo_3.0_128x128.png'. This content should also be served over HTTPS.

Mixed Content: The page at 'https://extensions.slicer.org/catalog/All/30133/win?q=' was loaded over HTTPS, but requested an insecure image 'http://www.slicer.org/w/images/6/6b/RadiomicsExtension.png'. This content should also be served over HTTPS.

Mixed Content: The page at 'https://extensions.slicer.org/catalog/All/30133/win?q=' was loaded over HTTPS, but requested an insecure image 'http://www.slicer.org/slicerWiki/images/6/64/SlicerToKiwiExporterLogo.png'. This content should also be served over HTTPS.

Mixed Content: The page at 'https://extensions.slicer.org/catalog/All/30133/win?q=' was loaded over HTTPS, but requested an insecure image 'http://www.nitrc.org/project/screenshot.php?group_id=196&screenshot_id=269'. This content should also be served over HTTPS.

Mixed Content: The page at 'https://extensions.slicer.org/catalog/All/30133/win?q=' was loaded over HTTPS, but requested an insecure image 'http://www.slicer.org/slicerWiki/images/c/cd/SwissSkullStripper.png'. This content should also be served over HTTPS.

Mixed Content: The page at 'https://extensions.slicer.org/catalog/All/30133/win?q=' was loaded over HTTPS, but requested an insecure image 'http://slicer.org/slicerWiki/images/3/32/T1_Mapping_Logo_Resized.png'. This content should also be served over HTTPS.

Mixed Content: The page at 'https://extensions.slicer.org/catalog/All/30133/win?q=' was loaded over HTTPS, but requested an insecure image 'http://wiki.slicer.org/slicerWiki/images/9/92/TCIABrowser_logo.png'. This content should also be served over HTTPS.

Mixed Content: The page at 'https://extensions.slicer.org/catalog/All/30133/win?q=' was loaded over HTTPS, but requested an insecure image 'http://www.slicer.org/slicerWiki/images/c/c2/VolumeClipLogo.png'. This content should also be served over HTTPS.

Mixed Content: The page at 'https://extensions.slicer.org/catalog/All/30133/win?q=' was loaded over HTTPS, but requested an insecure image 'http://wiki.slicer.org/slicerWiki/images/5/59/MpReviewLogo.png'. This content should also be served over HTTPS.

Retrieving extension metadata [extensionId: 61260e2b342a877cb3b8d73e]

Retrieving extension files [extensionId: 61260e2b342a877cb3b8d73e]

Downloading extension [item_id: 61260e2b342a877cb3b8d73e, file_id: 61260e2b342a877cb3b8d745]

Failed downloading: https://slicer-packages.kitware.com/api/v1/file/61260e2b342a877cb3b8d745/download

```

This happens both on Linux and WIndows. If I copy and paste the referenced URL to the web browser in the same computer, I can download the file 30133-win-amd64-SlicerMorph-gitf70c039-2021-08-20.zip without an issue.

I suspect this is because our institution uses self-signed certificates in their corporate network. While, the regular OS (browsers and other operations) work fine, somehow this is not getting propagated to the Slicer. Is there a solution for this? Our IT admins consider this as Slicer’s problem, since on the same computer I can get to the specified URL without the error.

@jcfr

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_[View the full topic](https://discourse.slicer.org/t/new-extension-manager-and-issues-with-corporate-certificates/19361)._