Step 1 - Find the content owned by the user
Note:
Make sure to enable the creation of Ask Data lenses and collections on the Site Setting page because when they are disabled the corresponding tabs are hidden and the site administrator can not check these contents in the UI.
Step 2 - Find subscriptions
A Tableau Server Administrator can navigate to Tasks > Subscriptions and there may be a subscription that is still associated with the user. A user search may not find the subscription associated with the user.
Sort by the "Subscriptions" column then scroll to the user. The user may have "subscribed by" still associated with their account. Make a note of the users that have subscriptions and resubscribe under a new content owner.
If a user is subscribed to a view then unlicensed, their subscription still exists but the email does not get sent. For a very large user base, if the unlicensed user is the only user getting a subscription, it will be important for Server performance to delete this user's subscription. Tableau Server will do the work but not send the email.
Step 3: Delete the content from Recycle Bin (Workbooks, Projects & Data Sources)
Now try removing the user from the site.
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