AppManagement and SubscriptionSettings Services, Multiple Web Applications and SSL

So currently I am setting up four environments of which one is production, 2 are staging and another is was a playground installation.

My staging environments (TEST, QA, PROD) are multi-server, multi-farm systems (multi-farm because the 2013 Farm publishes Search and UPA to existing 2010 Farms).
They are running SPS2013 Standard with March PU 2013 + June CU 2013. They will be using App Pool Isolation and App Management and SubscriptSettings Services have their own account (svc_sp{t, q, p}_app, i.e. svc_spt_app, svc_spq_app and svc_spp_app).

I have three web applications of which all are secured by SSL making a wildcard certificate necessary for the app domain. Each has their own account (svc_sp{t, q, p}_{col, tws, upa}). The reason for this is that I will be using Kerberos Authentication and for the SPNs I need dedicated accounts for each Application URL.

My playground was once a 4 server farm, but now 3 servers have been removed. It does not run the March PU 2013 nor June CU 2013. There app pool isolation wihtout SSL is used.

On the playground the app management worked well. I actually encountered my problem on my test first and tried to replicate on the playground, but couldn’t. But I am getting ahead of myself. The system was setup via autospinstaller and the necessary certificates and IPs involved were requested and implemented. The AD Team did the domain setup for me. I didn’t setup my environment following this article, but it is a good one to read. I also got the idea of creating a separate dummy web application for attaching my IIS Bindings and Certificate from it, which makes a lot of sense, because of security considerations and kerberos.

The first article to read to get an overview of what is necessary and what’s trying to be achieved can be found here.

So I set up everything and still it wasn’t working. What does that mean? I will explain. When I subscribe to an app, download it from the store and add it in a site collection of my choosing I get to click on it once it is finished installing. The link then leads me to my app domain. With SSL only when I was using the same application pools I could actually get anywhere, otherwise I say the below.

This is what I wanted to see:
Expected

This is what I saw on any of the web applications with SSL and that had a different app pool account than the one I was using for my dummy web application.
Actual

So this blank page is actually exactly what you see when you leave the request management service running on the frontends without doing any topology configuration.

So I tried to work with the user policy from the web application management page in hopes of giving the users permissions on the content databases. This was actually not happening as I found out later, but which was actually exactly what was needed. I had to manually add the account of the app pool for the app domain to the SPDataAccess Group of the content databases. Then it also works with SSL. I actually set up three web applications WITHOUT SSL on the Test Staging Environment with the same users as the SSL Web Applications and this worked like a charm, but for any SSL web application I needed to explicitly give permissions to the content database. This is a nightmare to maintain. For my migration of 20 databases from 2010 to 2013 I need to do this again and again and for each new content database I will create in the future. Just imagine you create a new content database and forget to do this. Now for any site collection in this content database the above issue will show up. Hard to debug later on.

Not sure what Microsoft is thinking here, but I am happy that it only took me 4 days to figure this one out.

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