SharePoint The requested service, could not be activated. See the server’s diagnostic trace logs for more information

This is the issue you will find when you deploy APP in sharepoint evnivronment.

Here this issue will arise not just because of the service is not running.

Root Cause :

The root cause for this issue is lack of memory in the machine from sharepoint end.

Resolution :

Open Services wizard :

Go to Start -> type Services.msc

This will launch the services windows there you can find the service with name Sharepoint search host controller

Just right click on and Restart ( It will taken around 4-5 mins time ). But it will release all the leaked memory and consumed memory. You can verify the same in memory section from you windows manager just for your verification.

Then ReDeploy your solution this time it will sure go on successfully.