Why won't my start and theme work on my Nokia 930?

[Windows Central Question]

My start and theme won't work on my Nokia 930

my start and theme in settings worked at first now I try to change it and it won't work. Any ideas?

 

[RumoredNow]

Re: My start and theme won't work on my Nokia 930

Do a Soft Reset by holding the Volume Down + Power buttons until the phone vibrates and reboots.

Then try changing your start + theme again.