Jul 30, 2016 Anybody else experiencing an issue with Itunes? Mine has been stuck on "Checking iTunes Library" for quite a long time.
Jul 31, 2016 Quit iTunes. Go to the iTunes folder that contains the iTunes library files: Mac: From the menu bar at the top of your computer screen, choose Go > Home. Open the Music folder, then open the iTunes folder. Windows: Navigate to \Users\username\Music\iTunes\. Drag the iTunes Library.itl file to your Desktop. Learn what to do if you can't find the file. In the iTunes folder, open the Previous iTunes Libraries folder. Find the file namediTunes Library YYYY-MM-DD where YYYY-MM-DD is the date you updated iTunes (Year-Month-Day). If you don't see a Previous iTunes Libraries or a recent YYYY-MM-DD file, your iTunes Library file might be in a custom location. Search for Previous iTunes Libraries on your computer to find the most recent YYYY-MM-DD, then continue with step 6. Select the file, then press Cmd + C (Mac) or Ctrl + C (Windows). Press Cmd + Up arrow (Mac) or Alt + Up arrow (Windows). Press Cmd + V (Mac) or Ctrl + V (Windows). The YYYY-MM-DD file should now be copied into your iTunes folder. Rename the copy "iTunes Library.itl" (without the quotation marks). Hold down the Option key (Mac) or the Shift key (Windows) and open iTunes. When you see a message that asks you to Choose iTunes Library, click Choose Library. Point iTunes to the file you renamed in step 9. https://support.apple.com/en-us/HT203225
Aug 3, 2016 iTunes only sucks on Windows. It is slow on even my new PC, and locks up from time to time. On my Mac, s--- is smooth and performs amazingly.