Q: My Ipod Won't Connect To Itunes Anymore

Not knowing all you tried, see if you missed anything here

First:

if applicable, iTunes: Fix iPhone or iPod Not Detected in Windows 10

http://www.technipages.com/itunes-fix-iphone-or-ipod-not-detected-in-windows

next try

Apple Mobile Device USB Driver Missing

https://discussions.apple.com/thread/4066236

last

iPhone, iPad, or iPod not recognized in iTunes for Windows

https://support.apple.com/en-au/HT204095

- New cable and different USB port

Also see:

iPod not recognised by windows iTunes - ASC

https://discussions.apple.com/thread/5929312?tstart=0

Troubleshooting issues with iTunes for Windows updates

https://discussions.apple.com/docs/DOC-6562

- Try on another computer to help determine if computer or iPod problem