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The University of Manitoba campuses are located on original lands of Anishinaabeg, Cree, Ojibwe-Cree, Dakota, and Dene peoples, and on the National Homeland of the Red River M├ętis. More

Library Apps & Extensions: FAQs

Frequently Asked Questions

and tips for troubleshooting.

Firefox Error Message

Q: I've installed the browser extension in Firefox, but all I see is a message saying "an error has occurred, please try again later"!

Error message in Firefox

A: You need to update to the most recent version of Firefox. This extension is supported from version 56 onward.

Click here to download the latest version of Firefox from Mozilla.


Q: When I'm setting up the extension, I see the option to "Skip the pop up and automate my access". What happens if I check this box?

Image of LEAN settings box

A: If you check this box, you will be automatically connected to UM Libraries resources on external websites whenever possible. If you leave this box unchecked, you will need to click the pop up to get access every time you visit an external website, such as or; see the image below.

You can check or uncheck this box at any time by accessing the Settings area of the browser extension. Click the gear icon on any pop up to change your settings.

Example of where to find settings icon on LEAN pop up

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If library staff are not currently available, your request will be added to an email queue. We will respond as soon as possible.