Q: The iPod could not be synced because this computer is no longer authorized for purchased items that are on this iPod.

Full message that pops up

"The iPod could not be synced because this computer is no longer authorized for purchased items that are on this iPod.

To authorize this computer for items purchased from iTunes Store, choose Store > Authorize This Computer."

I am unable to sync my music, applications, movies, etc. to my iPod touch. The only way I am able to bypass the message that pops out when I try to sync (the one in the title) is by clicking "Apply" instead of "Sync". To do this, I make changes to Apps, Music, or Movies (...) and the buttons "Revert" and "Apply" will replace the button "Sync".

My problem is most likely not due to using many accounts because I only have one and it is the only one that I use. I do not share accounts with my family members. Still, I have tried everything here, nothing has worked for me. Since I don't often listen to Podcasts, I have deleted them from my iPod. I have no idea why I am unable to sync and no one seems to have the same problem as me.

Thank you for your help in advance.

Details

• iPod touch, 5th generation
• iOS 8.1.2
• iTunes 12.0.1.26
• Windows 8

Purchases

• Pre-ordered album "Froot" purchased from the account that is authorized to my computer
• Podcast "Not Too Deep with Grace Helbig" also purchased from the account that is authorized to my computer