I've been playing with "calendar overlay" feature and it appears that this only works within the same web app (although it does work across site collections). When I attempt to add a calendar using the URL of a site in a different web application,
I get "Unable to find specified web in the given URL".
As a resolution, in Central Admin I've granted the app pool account from each web app "Full Control" to the other web app. Still no luck.
Any ideas? Thanks!
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