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When I tried to stop a service with "Task Manager > Services" on Windows 7, it failed saying "Access Denied". But when I tried with "Services.msc", it succeeded. I used the name user.

Why could "Services.msc" succeed when "Task Manager" fails? What's the difference between them?

Do they have different permissions or something like that?

ImsorryDaveImafraidIcantdothat
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You are most likely member of the Administrators group and your UAC settings are set to default.

In this case your user gets elevated and Servicesist started in the real administrator context of your user. Due to the mentioned settings you are not prompted to allow that.

You may set the UAC to the highest level and will be prompted then to allow this operations though.

In contrast, Task Manager always starts in the context of the current user without an upgrade.

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marsh-wiggle
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Services.msc requires admin rights to modify(run, start, stop, etc.) any of the objects in its list, while task manager does not necessarily require admin rights to modify every one of the processes in its list. You can run task manager with admin rights to end certain processes that require system level privileges.

Caine Kiewit
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