What is QuickBooks Error 4120 and how can it be resolved?

[cocoy77015]

Hi everyone,

I’m encountering QuickBooks Error 4120 when trying to process transactions, and it’s causing significant issues. Has anyone dealt with QuickBooks Error 4120 before? What steps or solutions did you use to fix it? Any advice would be greatly appreciated!

Thanks in advance!

[vatop84087 · Accepted solution]

QuickBooks Error 4120 occurs due to issues with online banking or downloading transactions. To resolve it:

1. Check Bank Connection: Ensure it’s active and correctly set up.
2. Update QuickBooks: Make sure you're using the latest version.
3. Re-sync Bank Account: Disconnect and reconnect your bank account.
4. Clear Cache: For QuickBooks Online, clear your browser's cache and cookies.