I turned off the shut-off valve to my toilet to make some repairs and now the shut off valve won't turn back on!? What happened??

You probably got some sediment or minerals caught in the valve, try turning it back and forth carefully and you might be able to turn it out or shake it lose. But do it carefully as not to break the valve or you'll have a big mess.

I turned off the shut-off valve to my toilet to make some repairs and now the shut off valve won't turn back on!!!?? What happened???
Are you saying the valve handle won't turn or the valve will on but no water gets up to the tank? Backto you, Tom

It's to an ice maker on my refrigerator. I tried to shut it off but it kept on running.