I am using Server for ArcGIS 10.1 on Windows Server 2008 R2.
The Rest Services Directory shows no services at the root level (the SampleWorldCities is actually present but not shown in the directory). The Directory also does not list the folders that are present. If I type a folder name in the URL and refresh, then the services in that folder are shown.
This is not a problem in ArcCatalog or ArcGIS Server Manager. What could be the solution?