SSRS + Report Manager looks strange

Question

I have an "old" SQL Server 2012 installation with Reporting Services which works very well and where the Report Manager looks like it should:

Now I've installed the same SQL Server 2012 version in a second virtual machine and right after the installation, the Report Manager looks some kind of broken:

Also the formatting of my reports is suddenly broken.

I used:

• the same version of Windows Server 2012 ("old" server: Evaluation | "new" Server: MSDNAA)
• the same version of SQL Server 2012 ("old" server: Evaluation | "new" Server: MSDNAA)
• the same version of Internet Explorer

I have no idea what kind of bug this is ...

Answer 1

In your screenshots, it looks like you have IE Compatibility View enabled in the second screenshot (i.e. the new Report Server) but not the first (i.e. the old Report Server).

Making sure both environments are being viewed the same way through IE should either solve the issue or help eliminate this as a possibility.