QZ Tray disconnected from ILS

[Samantha Ingerson]

QZ tray isn't connecting to our library's ILS - it keeps giving an "Unable to establish a connection with QZ Tray" error message in Microsoft Edge. I've double-checked the demo page and everything seems to be working correctly. I've even done the "turn it off, turn it back on" and I still got the error message.

We're running v2.2.5 on these two computers and they might be out of date but I want to make sure before I uninstall the current version.

[Tres Finocchiaro]

QZ Tray 2.2.5 should be just fine 

Does the same thing occur at https://demo.qz.io?

There's a new Chrome update blocking connections but I tested on Edge two days ago and it wasn't affected.

On Sat, Apr 11, 2026, 12:49 PM Samantha Ingerson <ingerson...@gmail.com> wrote:

QZ tray isn't connecting to our library's ILS - it keeps giving an "Unable to establish a connection with QZ Tray" error message in Microsoft Edge. I've double-checked the demo page and everything seems to be working correctly. I've even done the "turn it off, turn it back on" and I still got the error message.

We're running v2.2.5 on these two computers and they might be out of date but I want to make sure before I uninstall the current version.

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[Samantha Ingerson]

When I checked, it said that it was connected. I did have to find the printer each time I opened the page and I was just informed that the website of our ILS isn't working so it has to be related to a setting there. Any advice would be appreciated!

[Tres Finocchiaro]

Can you click the QZ Tray icon in the System Tray, click "Advanced", "Site Manager" and see if ILS is in the blocked list?

[Samantha Ingerson]

I actually figured it out: one of our circulation clerks hit "block" instead of "allow" when it asked for permission in the browser so I just needed to reset the permissions.

Thank you for your help though!

[Tres Finocchiaro]

Great, thanks for the update!