“Access Denied” while Activating Custom Timer Job in Sharepoint 2010

This thread seems to be the same issue;

http://sharepoint.stackexchange.com/questions/49222/access-denied-while-activating-custom-timer-job

Jamie's right the link should explain why you can't activate your feature through the GUI. However, what it fails to explain is how else you can activate on other environments that do not have VS ( like your test and production environments). For those environments use the powershell commands for activation. The powershell command will run by the owstimer and so uses the farm service account for activation.

Here a msdn link with the enable feature so command http://msdn.microsoft.com/en-us/library/ms442691(v=office.14).aspx

Lastly, remember that farm features are automatically activated, so if you are using one then deploy your solution using powershell!

If the above does not help, let me know via a response to this post and if your willing to share your code I'll be happy to have a look and sort out the issue for you.

I would prefer changing the scope of the solution to higher level rather than site.
i do have a custom timer created but it is activated at the web application level and the process is actually for each site collection.

can't the scope of the site be changed to web application level hopefully that should fix the issue.