Thanks Jo. Unfortunately that didn't resolve the problem. The report server logs only detail what I included in the original post - aside from a stack trace that's no good...

All through HTTPS and, according to Edge, the certificate is valid.

Thanks frederico_fonseca. That was exactly what I needed. Annoying that this still isn't in the GUI, even though it adds the parameter (with true) to the command line when scripting...

Nope. Nothing in the package is doing that. The package doesn't even start running.

You've misread. Running the package (under a proxy) runs it synchronously - not what I want.

Running the stored procedures runs it asynchronously - but this errors. 

Thanks for the link. However T-SQL steps cannot be run under a proxy and using a proxy on the SSIS step won't make it run asynchronously.

May have found an answer.

I hadn't opened SQL Server Configuration Manager since the upgrade but when I tried, I got the error:

Cannot connect to WMI provider

Googling that, I found the...

Thanks for the response. That registry hive was missing from the server after the upgrade - maybe "HKLM\SOFTWARE\Microsoft\PowerShell\1\ShellIds" got replaced by the upgrade?

However we tried recreating it previously but that...

I'd already found that and it doesn't work. If I run PowerShell, I get:

Scope          ExecutionPolicy
-----   ...

Hi Andreas

Yes, the file does exist and the account is able to delete the DBCC snapshot file (which is what this is) for all the other databases in this folder.

Peter

Thanks for the feedback. On our new server (which is actually PowerBI) we have moved to DNS aliases so moving forward, we'll be fine. Just need to deal with the...

Ah. That's annoying. But thanks.

Is there a way to redirect SSRS given that I don't want to uninstall it just yet.

Sorry; phrased my question badly.

Since SSRS isn't running, *how* is it intercepting the URL? Why isn't this seen by IIS as any other HTTP request and redirected?

That's what I meant.

So I've been doing some more investigations into the issue, running ProcMon against the PowerShell process while the task was running and found that there was a 5 second pause...

Why do they need to see that information?  It could contain sensitive data (e.g. passwords) that should not be exposed - and really doesn't provide any additional information that...