Security Center Failed to Validate Caller with Error DC040780

When using Event Viewer, you may see such an error message – security center failed to validate caller with error dc040780.  This issue is related to a corrupted system file or the interference of third-party antivirus with Windows security.

Fix 1: Uninstall Acronis True Image 2021

According to the users, the conflict of Acronis True Image 2021 can lead to the “security center failed to validate caller with error dc040780” issue. It’s recommended to uninstall Acronis True Image 2021 to fix the issue.

Step 1: Type Control Panel in the Search box to open it.

Step 2: Go to Programs and Features. Find Acronis True Image 2021 and right-click it to choose Uninstall.

Step 3: Then, follow the on-screen instructions to uninstall Acronis True Image 2021. Then, restart your PC.

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Fix 2: Uninstall Third-Party Antivirus

If you have installed any third-party antivirus, you had better uninstall them to fix the error security center failed to validate caller with error dc040780. You can refer to the following posts if you have installed them:

• How to Uninstall Bitdefender on Windows/Mac/Android/iOS 
• How to Uninstall AVG on Windows and Mac | Can’t Uninstall AVG
• How to Uninstall Webroot on Windows/Mac? Follow the Guide!

Fix 3: Disable Windows Defender

This solution to fix the “security center failed to validate caller with error dc040780” issue is disabling Windows Defender. Here is how to do that:

Step 1: Type Control Panel in the Search box to open it.

Step 2: Go to System and Security > Windows Defender Firewall.

Step 3: Turn Windows Defender Firewall on or off. Click Turn off Windows Firewall (not recommended) for both the Private and Public network settings.

Fix 4: Disable Windows Security

Besides, it’s recommended to turn off your Windows Security firewall. Here is how to do that:

Step 1: Type Windows Security in the Search box and click Open.

Step 2: Click the Virus & threat protection tab and click the Manage settings button.

Step 3: Turn off the Real-time protection toggle. Click Yes on the UAC (User Account Control) prompt that pops up.

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Fix 5: Update BIOS

If not, you can try the last solution to fix the “security center failed to validate caller” error. The following are the steps:

Step 1: Type msinfo in the Search bar to find System Information and open it.

Step 2: Locate the BIOS Version/Date and copy it to a text file on your computer or write it down on a piece of paper.

Step 3: This process varies by manufacturer, thus you can go to the official website of your computer brand to find the next steps.

Final Words

To sum up, this post has shown how to fix the “security center failed to validate caller with error dc040780” error with detailed instructions. If you encounter the same issue, you can try the instructions listed above. If you have some different ideas, you can share them in the comment zone.