It wont let me turn on unkown sources

[Android Central Question]

I got to the unknown sources to turn if on and it makes a grey wave over it but it doesn't turn on how do I turn it on

 

[belodion]

Is this a phone provided by an employer?

 

[SpookDroid]

It might an Administrator app/service preventing it. Like @belodion mentioned, if this is a company phone or you're using corporate e-mail in it, some security policies might be enforced (like no root, no unknown sources, enforced secure lockscreen, etc.)