How to display a message/notice window (pop-up message) for Tableau Server after sign in, like Tableau Cloud below.
Tableau Cloud's maintenance window (pop-up message)
The ability to display a maintenance window for Tableau Server is not built currently into the product.
Workaround 1:
Administrators can use a sign in message and/or a welcome banner message to help communicate the downtime window.
Workaround 2:
For a non-SAML Tableau Server, administrators can use a Sign-in logo and/or the Sign-in page text to communicate with a more impactful message.
For example:
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