# LTI PRO "Unauthorized", "Session was expired" Error

**URL:** <https://devforum.zoom.us/t/lti-pro-unauthorized-session-was-expired-error/26134>\
**Category:** App Marketplace\
**Created:** [August 3, 2020, 8:11pm UTC](https://devforum.zoom.us/t/lti-pro-unauthorized-session-was-expired-error/26134 "2020-08-03T20:11:54Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![jimmyleehale](https://avatars.discourse-cdn.com/v4/letter/j/8edcca/32.png) [@jimmyleehale](https://devforum.zoom.us/u/jimmyleehale)\
**Post date:** [August 3, 2020, 8:11pm UTC](https://devforum.zoom.us/t/lti-pro-unauthorized-session-was-expired-error/26134/1 "2020-08-03T20:11:54Z")

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**Description**  
LTI PRO app link ‘unauthorized’ link failure.

**Error**  
When navigating to [https://applications.zoom.us/home/lti/rich/](https://applications.zoom.us/home/lti/rich/) , we experience an ‘Unauthorized’ … Sorry, your permission was expired. Please refresh the page or login again … 401 - INT\_850049896691c1a7

I replied with the screenshot.

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**Author:** ![jimmyleehale](https://avatars.discourse-cdn.com/v4/letter/j/8edcca/32.png) [@jimmyleehale](https://devforum.zoom.us/u/jimmyleehale)\
**Post date:** [August 3, 2020, 8:13pm UTC](https://devforum.zoom.us/t/lti-pro-unauthorized-session-was-expired-error/26134/2 "2020-08-03T20:13:14Z")

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![image (13)](https://us1.discourse-cdn.com/flex016/uploads/zoomdeveloper/original/2X/f/f6392ed3ff13c008843909004da7c7b98f3c452f.png)

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**Author:** ![tommy](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/tommy/32/72769_2.png) [@tommy](https://devforum.zoom.us/u/tommy)\
**Post date:** [August 4, 2020, 5:57pm UTC](https://devforum.zoom.us/t/lti-pro-unauthorized-session-was-expired-error/26134/3 "2020-08-04T17:57:19Z")

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Hey @jimmyleehale,

Have you tried logging in again?

Thanks,  
Tommy

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**Author:** ![system](https://us1.discourse-cdn.com/flex016/uploads/zoomdeveloper/original/3X/6/1/614bdd549b610bbaa46ff934617683a02bdaa03c.png) [@system](https://devforum.zoom.us/u/system)\
**Post date:** [August 14, 2020, 5:57pm UTC](https://devforum.zoom.us/t/lti-pro-unauthorized-session-was-expired-error/26134/4 "2020-08-14T17:57:34Z")

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Closed on August 14, 2020, 5:57pm UTC

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