I just had to reinstall itunes and now it won't open
Today I updated the software in my iphone thru the itunes app that was installed and working on my windows 10 HP laptop. That was successful. I closed the itunes on my laptop and an hour later decided to back up my phone. I tried to open itunes again and it wouldn't open, so I deleted it and downloaded itunes from the apple website. That was successful. I then tried to open itunes and I get an error message saying "the itunes library .itl" cannot be read because it was created by a newer version of itunes.....
What is going on and what should i do?