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I am getting the following:

Unable to download updates from "extensions.gnome.org":
[*/*/*/source/shell-extensions/*] failed to download https://
extensions.gnome.org//static/extensions.json: Cannot
resolve hostname

I am running the out of the box Ubuntu Software v3.28.1, which I agree is a nice way to manage the software on my system.

I was able to install and launch PyCharm Pro with no issues, though I may try the snap later. I was also able to install and launch Atom, VLC, Zoom, Chromium, Google Chrome and VirtualBox without issues, so when time permits I'm guessing I need to go upstream into source code, as I'd like to understand where the error message came from and if it means anything.

The message did not reappear when I restarted the machine.

I haven't yet tried to figure out steps to reproduce.

Unable to download updates from "extensions.gnome.org"

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  • I also faced the same problem. But after running sudo apt update it got fixed. – p gokul May 28 '18 at 15:53
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    Could you please edit your question to include the output of host extensions.gnome.org and host extensions.gnome.org 8.8.8.8? Thanks. – David Foerster May 29 '18 at 12:56
  • @DavidFoerster I'm having a similar issue and tried running those commands. What is the expected output of these, do you have any documentation on what these should do? Thanks. – Kieran Cooney Sep 3 '18 at 11:04
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    @KieranCooney: Could you please open a new question if you have a new or follow-up question? The comment section is not suitable or meant for new questions or extended discussion. You’re welcome to send me a comment with a notification to draw my attention to it. Thanks. – David Foerster Sep 4 '18 at 9:17
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I had the same error. As suggested prior comments, I ran:

sudo apt update
sudo apt upgrade

And that seemed to fix it.

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