Resolve Windows App Code Signing Issue

Job ID: 39328278

Budget: $30 – $250 USD

Project Title:
Fix Code Signing / Certificate Issue for Windows Application

Project Description:
I have developed a Windows desktop application (EXE file), and I have already added a code signing certificate. However, when I run the installer or EXE on a system, Windows still flags it as "untrusted" or "not signed", showing warnings like "Windows protected your PC" or "Publisher: Unknown".

I need an experienced Windows developer (or someone familiar with code signing and digital certificates) to:

- Review the current code signing implementation
- Verify if the certificate is correctly applied to the EXE and/or installer
- Ensure the application shows a trusted publisher and removes SmartScreen warnings
- Guide me on best practices for code signing (timestamping, using EV certs if needed, etc.)
- Help with resigning or reconfiguring the application if necessary

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Requirements:

- Experience with Windows app development and digital code signing
- Familiarity with tools like `signtool`, `certutil`, or similar
- Knowledge of Windows SmartScreen and reputation-based protection
- Ability to troubleshoot certificate chain, timestamping issues, and trust level problems

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Deliverables:

- A properly signed application that does not show untrusted publisher warnings
- Step-by-step guide or assistance for future builds
- Explanation of what was wrong and how it was fixed

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Please only apply if you have previously worked with code signing and resolving trust issues in Windows applications. I can provide the EXE, the installer, and details about the certificate I used.