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Hi 221pisces,

Thank you for participating in the Apple Support Communities. We understand you're unable to login to iTunes on your PC computer. We recommend testing to make sure you're able to login to this Apple website to ensure your password and account are working properly: Manage your Apple ID. If not, you can reset your password on that same website if needed. If you are able to login on the website, you'll want to make sure you have the latest version of iTunes by following the steps here: Update iTunes on PC.

"You can install iTunes from either the iTunes Download website or the Microsoft Store.

Check for iTunes updates from the iTunes Download page

If you install iTunes from the iTunes Download page, you can manually check for updates to iTunes, or set iTunes to check for new versions automatically every week. 

In the iTunes app  on your PC, do one of the following:

• Manually check for new versions of iTunes: Choose Help > Check for Updates.
• Have iTunes automatically check for new versions every week: Choose Edit > Preferences, click Advanced, then make sure the “Check for new software updates automatically” is selected.

When automatic updating is turned on, iTunes checks for new updates weekly. It checks only after you have quit and restarted iTunes at least once during a seven-day period.

Check for iTunes updates from the Microsoft Store

If you install iTunes from the Microsoft Store, new versions will be automatically downloaded; however, you can manually check for updates in the Store.

• Open the Downloads and Updates pane of the Microsoft Store app.

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You may also want to temporarily disable any security or VPN software you have as this may prevent communication with Apple servers.

We hope this helps.

Take care.