Having to continuosly sign in

All of a sudden I have to continuously sign in to my apps through xbox....I will be signed in to live and want to watch Amazon....I am forced to sign in twice. If I want to switch to Netflix I have to sign into live again....etc...etc...what happened and
how do I fix it.

:)

 

power supply

the light on my power supply is continuosly blinking orange, what does it mean and what can I do to fix it?

 

cant buy the taken king on xbox 360

I am having the same issue and I already did all of what onyx26is said above and that what was in the support thread for error code 80153003 including the following steps that onyx26is mentioned still no luck so it's obviously a server side download issue
cause when you go to purchase the game without purchasing the dlc button the dlc is already in active dowloads continuosly reinstalling itself without being purchased.

 

Hey there, so if I'm understanding correctly whenever you switch between apps you're getting signed out? If so, to fix this try deleting your profile from the console (profile only), clearing the system cache 3 times, restating the console and re-downloading
your profile.

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Delete and re-download profile:
support.xbox.com/.../profile-move-delete

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Clear system cache:
support.xbox.com/.../clear-system-cache