Can't Install android sdk

I’m new to the engine and I tried to follow the android sdk installation process in the documentation. Every time I try to install it, I get an error like this:

Can someone please help?

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Could you tell me exactly where in the documentation that you’re getting stuck? Please provide a link too.

Have you tried restarting your computer since you ran into this error?

I’m sorry, I meant to take this question down. It turns out that my anti virus was blocking some programs. I still can’t install tegra with visual studio express though.

I know your original issue was resolved by turning off the anti-virus, but it still sounds like you’re having trouble.

Make sure you go through this [documentation][1] step by step, your issue should be resolved once you’ve done that. If you’re working in 4.12.1, VS 2015 should now work.

https://docs.unrealengine.com/latest/INT/Platforms/Android/GettingStarted/1/