What is the patch level of your ALM server?
How are you selecting multiple QTP tests to run?
What messages, if any, do you get regarding the QTP tests that don't run?
Are you attempting to run the tests locally (on the same system where the ALM UI is running) or remotely?
How are you selecting multiple QTP tests to run?
What messages, if any, do you get regarding the QTP tests that don't run?
Are you attempting to run the tests locally (on the same system where the ALM UI is running) or remotely?