Itunes error 45054

This link may help,
https://discussions.apple.com/message/23685210#23685210

I will try to use this software https://softorino.com/convert-mp3-iphone-ringtone/

From http://support.apple.com/kb/TS3297

iTunes Store loads partially or returns "Error 306" or "Error 10054"
Proxies, parental control settings and software, security or filtering software, or a bad iTunes Store cache can cause this.
To address proxies, Remove Internet Options proxy settings and connect to the Internet without a proxy.
To reset iTunes Store cache:

1. In iTunes, choose iTunes > Preferences (Mac) or Edit > Preferences (PC).
2. Click the Advanced tab.
3. Click the "Reset cache" button.
4. Click OK and see if the issue is resolved.

Adjust Parental Controls in iTunes:

1. Open iTunes.
2. Access iTunes preferences:
   1. On a Mac: From the iTunes menu, choose Preferences.
   2. On a Windows PC: From the Edit menu, choose Preferences.
3. Click the Parental Controls tab.
4. Remove restrictions on Parental Controls.

Uninstall Apple Application Support, Apple Mobile Device Support, Apple Software Update, Bonjour, iTunes, and Quicktime. Basically any Apple software.
Download and re-install itunes, it will install all of the above.
Open iTunes. It now runs correctly.
I was having the same problem until I did this, and it fixed the problem right away.
Sit back and enjoy music.

Are you a big victim of Windows error 127 on iTunes? If yes then call at windows technical support number 1-800-220-1041 to Fix Windows error 127 on iTunes by well experienced windows tech support team.
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sometimes there are certain softwares that are already in the system and they have disable any file that might help applications like the itunes to work properly..... so i think you should reinstall the operating system if possible use windows 7

try to uninstall the itunes using revo uninstaller(free software on the web, next download Ccleaner and thenfo to registry and scan for registry rrors and then fix all errors(its a button on the software) then delete the setup file that you downloaded and redownload the itunes from www.apple.com, and try Installing it, This should solve the problem.

you got to reinstall itunes and try again that should work once you uninstall itunes run ccleaner then install itunes again

uninstall - reinstall itunes should work and you will not loose any music


windows xp
http://support.apple.com/kb/ht1925

windows vista , 7
http://support.apple.com/kb/HT1923