QuickBooks Error 1920 is a common installation issue that typically occurs when the QuickBooks database server manager fails to start. This error can prevent you from installing or updating your QuickBooks software, disrupting your accounting processes.

Causes:

Inadequate permissions for the QuickBooks installation.
Corrupted installation files or incomplete updates.
Conflicts with third-party applications or antivirus software.
Troubleshooting Steps:

Run as Administrator: Right-click on the QuickBooks installer and select "Run as Administrator" to ensure you have the necessary permissions.

Repair QuickBooks Installation: Go to the Control Panel, select "Programs and Features," find QuickBooks, and choose the "Repair" option to fix any corrupted files.

Check Windows Services: Ensure that the “QuickBooks DBXX” services are running. To do this, press Windows + R, type services.msc, and check for the relevant services.

Disable Antivirus/Firewall Temporarily: Sometimes, security software may block installation. Disable them temporarily and try reinstalling QuickBooks.

Use QuickBooks Install Diagnostic Tool: This tool can automatically fix installation errors. Download it from the official Intuit website and run it.

If the error persists after following these steps, consider contacting QuickBooks support for further assistance.