# 3D slicer No reaction after clicked INSTALL

**URL:** <https://discourse.slicer.org/t/3d-slicer-no-reaction-after-clicked-install/14926>\
**Category:** Support\
**Created:** [December 7, 2020, 10:26am UTC](https://discourse.slicer.org/t/3d-slicer-no-reaction-after-clicked-install/14926 "2020-12-07T10:26:35Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![BarnettZhang](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/barnettzhang/32/9102_2.png) [@BarnettZhang](https://discourse.slicer.org/u/BarnettZhang)\
**Post date:** [December 7, 2020, 10:26am UTC](https://discourse.slicer.org/t/3d-slicer-no-reaction-after-clicked-install/14926/1 "2020-12-07T10:26:35Z")

</div>

Hi,

I’m using 3D slicer version 4.11.20200930 (the stable release) on Windows and trying to install Jupyter Notebook extension. But every time I clicked on INSTALL and the green notifications show up, but not the install progress bar.

 ![image](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/3/7/37b822f88e6c57db8809e806e1100d9cec8d7749.png) I’ve tried to reinstall Slicer but the problem remains the same. Could someone help me fix this? Thank you in advance!

---

<div class="post-metadata">

**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:** [December 7, 2020, 3:35pm UTC](https://discourse.slicer.org/t/3d-slicer-no-reaction-after-clicked-install/14926/2 "2020-12-07T15:35:47Z")

</div>

Same issue as this I believe: [Extension service is down](https://discourse.slicer.org/t/extension-service-is-down/14914/2)

We hope it’s fixed soon