The thing is that the services are not down. They are always seen started as below:
I find out that the custom users(DMS Authorisation) that the accesspoint is not available. And then I see that only two services(below Fig) are running in QEMC, though the Services are running as normal in the above figure
When I start all the services,again the accesspoint is available.
License is still valid
All the Services are on the same machine.
We have Windows server 2008
and the QV Version is 9.0.7502.8 which is same as QV Server version
see that others are also having same problem in the following thread