After the installation and some days working without problem, my ArcGIS Server instance start having problems:
first a message start appearing on the Manager website saying that the service was unavailable.
I reinstalled the whole application including the IIS (since this is a developing Server it is not a problem), but then another message start coming say:
“This is a marker file generated by the precompilation tool, and should not be deleted!
After many headaches and internet surfing time I found the solution here.
Now it seems to be working again. Â 😀 !.