The error code you provided, 0x0000007C, translates to a decimal value of 124. In the world of Windows errors, this code represents ERROR_INVALID_LEVEL. This error typically pops up when encountering issues related to network printing.

Here’s a breakdown of the error and potential solutions:

What Causes the ERROR_INVALID_LEVEL (0x0000007C) Error?

Several factors can contribute to this error when connecting to shared network printers:

• Corrupted Printer Drivers: Outdated or corrupted printer drivers can lead to communication problems between your computer and the shared printer.
• Print Spooler Issues: The Windows Print Spooler service manages print jobs. Glitches or errors within this service can prevent successful connections.
• Security Updates: Microsoft has implemented security updates to address vulnerabilities in the Print Spooler service. In some cases, these updates might introduce compatibility issues with specific printer drivers or network configurations.
• Incorrect Network Settings: Firewall restrictions or network configuration problems might be hindering communication with the shared printer.

How to Fix the ERROR_INVALID_LEVEL (0x0000007C) Error?

Here are some steps you can try to troubleshoot the issue:

1. Restart Your Computer and Printer: A simple restart can sometimes resolve temporary glitches that might be causing the error.

2. Update Printer Drivers:

• Go to Settings > Devices > Printers & scanners.
• Click on the shared printer you’re having trouble with and select “Manage device.”
• Click on “Update driver” and choose “Search automatically for updated driver software.”
• If Windows doesn’t find an update, you might need to download the latest driver from the printer manufacturer’s website and install it manually.

1. Restart the Print Spooler Service:

• Open the Services window (Search for “Services” in the Start menu).
• Locate the “Print Spooler” service.
• Right-click on it and select “Restart.”

1. Check for Windows Updates:

Make sure you have the latest Windows updates installed, as they might include fixes related to network printing issues.

1. Temporarily Disable Firewall (Test with Caution):

Important Note: Only disable your firewall as a temporary troubleshooting step. Firewalls are crucial for system security, so re-enable it after testing.

• Go to Settings > Update & Security > Windows Security > Firewall & network protection.
• Under “Domain network,” “Private network,” and “Public network,” turn the firewall settings to “Off.”
• Try connecting to the shared printer again. If it works with the firewall disabled, you might need to configure firewall exceptions for printer-related processes. However, consult your network administrator or refer to official Microsoft documentation for safe firewall configuration practices.

1. Troubleshoot Network Connectivity:

• Ensure both your computer and the shared printer are connected to the same network.
• Verify network cables are securely plugged in (if using a wired connection).
• Check for any network configuration issues that might be preventing communication.

Additional Resources:

• Microsoft offers a detailed guide on troubleshooting network printing issues, which might include solutions specific to your situation: https://support.microsoft.com/en-us/windows/fix-printer-connection-and-printing-problems-in-windows-fb830bff-7702-6349-33cd-9443fe987f73

If none of these solutions work, consider seeking assistance from a network administrator or IT professional who can delve deeper into your specific network configuration and printer setup.

Sources
Bleeping Computer