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Kaltura - Known Issue - Kaltura MediaSpace gives "User was not found or is not eligible, choose a valid one." message when trying to add a user to a channel, or change media ownership (UW-Madison)
Kaltura MediaSpace will give the error message "User was not found or is not eligible, choose a valid one." when trying to add a user that has not logged into Kaltura MediaSpace at least once.
In order to add a user to a channel in Kaltura MediaSpace or add a user as a collaborator, the user must have logged in at least once to Kaltura MediaSpace. If the user has not logged in at least once, you will see the following error when trying to add them: "User was not found or is not eligible, choose a valid one."
If you see this, please contact the user you are trying to add and ask them to login to https://mediaspace.wisc.edu/ at least once by clicking on the Manage button in the upper right and clicking Login: