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I have a vm dev environment with SharePoint 2013 (SP1 + October 15 CU) and a SQL server. I have a User Profile Service Application, App and Subscription Setting Application and all the services are started. I created a self-signed certificate in IIS and exported the PFX and CER for creating a new SPTrustedRootAuthority and new SPTrustedSecurityTokenIssuer.

I created a brand new TestApp (visual studio 2015 update 1, Office dev tools at same level) and tried launching it (verified cert path, password, and IssuerID). I get to the page to trust the app which I select, but then I am redirected to AppRedirect.aspx and it spins for forever. I inspected the page and found a hidden form with an error in one of the fields:

"The Azure Access Control service is unavailable."

Only think in ULS (even with verbose logging enabled) is a similar message:

Error when get token for app i:0i.t|ms.sp.ext|a978d8ad-8b8e-4f37-a99e-eaa1af75d0e3@174e37d4-6011-4ab3-bfb3-7305b8cba8fe, exception: Microsoft.SharePoint.SPException: The Azure Access Control service is unavailable.

App token requested from appredirect.aspx for site: but there was an error in generating it. This may be a case when we do not need a token or when the app principal was not properly set up. Exception Message:The Azure Access Control service is unavailable

I have been trying to set this up for a day and a half now and am stumped. Even stranger, if I manually launch a page with the app redirect url provided in ULS, the app launches fine and I have an authenticated usable SharePoint context. Any ideas on what is happening that prevents the app from launching?

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So I was never able to get the self signed certs working as described on technet, but following these steps, I was able to get everything running and it provide me a more realistic setup to prod/dev. I think the error about Azure ACS is a misdirect, but it is still disappointing to not be able to get the "easy" way running based on technet articles.

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