SSRS 2014 Add-In installation in SharePoint 2013

Issue

Installing SQL Server 2014 Reporting Services Add-In to SharePoint 2013 fails and log contains following:

This error occurs either by installing from SQL Server 2014 installation or from rsSharepoint.msi, which is  downloadable from MSDN.

Cause

Installation package failed to change web.config file of one or more Sharepoint web applications.

Resolution

Use two step installation to troubleshoot the issues: (MSDN article here)

and then:

The command will try to register Reporting Service configuration in web.config files.¬†If you have more than one web application, it’s necessary to find which web application causes the problem. I managed it by looking for:

This section (among other elements) is added to web.config when installation of SSRS completes succesfully. If it missing in the web application’s web.config , then there is probably something, which bothers the installation (even though the web application runs without any problem in the browser).

In my case it was a comment between two elements (which doesn’t bother SharePoint but bothers SSRS installation).

 

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