Could you let me know which version of QuickBooks Desktop you're using? Knowing your specific version helps me tailor the solution to your tools.
In the meantime, I recommend downloading the QuickBooks Desktop Tool Hub, which is specifically designed to troubleshoot the login and operational errors you're experiencing.
Please ensure your system supports the TLS 1.2 security protocol. Without it, QuickBooks cannot securely verify your credentials, which often results in login failures or blank screens.
Upgrading to the latest QuickBooks Desktop is also an option for maintaining essential security patches and support. This helps avoid the connection issues that occur when older versions' security certificates expire.
If you need further assistance, simply click Reply.
