ITunes says that this copy of iTunes is corrupted or not installed correctly

I open up my computer and it shows up saying that iTunes can't be opened because it is corrupted. It was working perfectly fine yesterday. I had been using it without problems for years. Anything I should do, or just reinstall?

Hello there, Jasonj9630.
The following Knowledge Base article offers up some great recommendations for troubleshooting issues with iTunes functionality:
iTunes: Troubleshooting issues with third-party iTunes plug-ins
http://support.apple.com/kb/TS3430
If after running through those steps, you find that the issue persists, you may want to download and run the iTunes Installer located here:
Download iTunes Now.
https://www.apple.com/itunes/download/
Thanks for reaching out to Apple Support Communities.
Cheers,
Pedro.

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