QuickBooks Error 30159 often occurs when your software fails to connect with your bank’s servers. This can happen due to outdated bank credentials, firewall restrictions, or temporary server downtime. To fix this error, ensure your QuickBooks and bank account details are up to date. You can also verify your internet connection, disable conflicting security software temporarily, and update QuickBooks to the latest version. Regularly monitoring your online banking settings can prevent this error from recurring and keep your financial transactions seamless.

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