How to Fix 'App Not Verified by Microsoft' Error When Installing

Encountering the message that an app isn’t a verified Microsoft app can be frustrating, especially when you’re eager to install new software or tools on your Windows device. This warning appears because Windows SmartScreen or your security settings are flagging the app as potentially unsafe, often because it isn’t recognized by Microsoft’s verification process. Fortunately, this doesn’t always mean the app is malicious; it might simply be new, from a lesser-known developer, or not yet verified. This guide will walk you through how to bypass or resolve this warning safely, ensuring you can install and use your desired app without unnecessary hindrance. Before starting, ensure you trust the source of the app and that it’s downloaded from a reputable website or developer to avoid security risks.

What You’ll Need

A Windows PC with administrative rights
The installer or app file you want to install
An active internet connection (optional but helpful for updates)
Basic familiarity with Windows security settings

Step-by-Step

Download the App from a Trusted Source
Ensure you download the application from a reputable website or developer. Avoid third-party sites that might host malicious files. Verify the source’s legitimacy before proceeding.
Locate the Downloaded File
Find the installer or app file in your Downloads folder or the location where you saved it.
Attempt to Run the Installer
Double-click the app or installer. If Windows blocks it with a warning like “This app is from an unknown publisher,” proceed to the next step.
Bypass the Windows SmartScreen Warning
When the warning appears, click on the link that says “More info.” Then, click the button labeled “Run anyway.” This allows you to proceed with the installation despite the warning.
Adjust Windows Security Settings (if needed)
If the above step doesn’t work, you may need to modify your security settings:
- Open Windows Security by clicking the Start menu and selecting Settings > Privacy & Security > Windows Security.
- Click on “App & browser control.”
- Under “Check apps and files,” temporarily turn off the toggle switch. Be sure to turn it back on after installation for ongoing security.
Install the App
Once you’ve bypassed the warning, proceed with the installation as usual. Follow any prompts specific to the app.
Re-enable Security Settings
After installation, go back to Windows Security and turn your app & browser control settings back to their original state to keep your system protected.
Verify the App’s Functionality
Launch the app to ensure it works correctly. If it doesn’t, check for updates or alternative versions from the developer’s website.

Common Mistakes

Ignoring the source — downloading apps from untrusted sites increases security risks.
Forgetting to enable security settings back after installation — leaving security features disabled can expose your system to threats.
Assuming all unsigned apps are malicious — many legitimate apps are unsigned but safe.
Not verifying app authenticity — always check digital signatures or developer credentials when possible.

Tips

Keep your Windows system updated for the latest security features and compatibility.
Use reputable antivirus software to scan downloaded files before installation.
Consider creating a system restore point before installing unfamiliar apps, so you can revert if needed.
Keep a backup of important data before bypassing security prompts.
Research the app online to see if others have encountered similar issues or warnings.

Troubleshooting

If the above steps don’t resolve the issue, try these additional options:

Run the App in Compatibility Mode: Right-click the app, select Properties, go to the Compatibility tab, and choose an earlier Windows version.
Disable Windows Defender Temporarily: Open Windows Security, go to Virus & threat protection, and select Manage settings. Turn off real-time protection, then try installing again. Remember to turn it back on afterward.
Use PowerShell to Bypass SmartScreen: Open PowerShell as administrator and run the command:
Set-ExecutionPolicy Unrestricted
Then, try installing the app again. Reset the execution policy afterward with Set-ExecutionPolicy Restricted.
Check for Windows Updates: Ensure your OS is fully updated, as updates can fix bugs related to security prompts.
Consult the Developer: Contact the app developer for verification or an official signed version.

Frequently Asked Questions

Q1: Is it safe to ignore the ‘not a verified app’ warning?
Only if you trust the source. Ignoring warnings from untrusted sources can expose your system to malware.

Q2: How do I know if an app is genuinely safe?
Check for digital signatures, verify the developer’s credentials, and scan the file with antivirus software before installation.

Q3: Can I permanently disable Windows SmartScreen?
Yes, through Windows Security settings, but it’s not recommended as it reduces overall security.

Q4: What should I do if the app still won’t install after bypassing warnings?
Try compatibility mode, run as administrator, or contact the developer for assistance.

Q5: Why does Windows block some apps even if I trust the source?
Windows uses multiple security layers, including SmartScreen and Windows Defender, which may flag certain apps based on their reputation or signatures.

Q6: Is there a risk in bypassing Windows security prompts?
Yes, if the app is malicious, bypassing prompts can harm your system. Always verify the source before proceeding.

This comprehensive guide should help you navigate and resolve the common issue of installing apps that aren’t verified by Microsoft, keeping your system safe while allowing flexibility in software management. Always prioritize security and only bypass warnings when you are confident in the app’s legitimacy.

How to Fix ‘App Not Verified by Microsoft’ Error When Installing