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Access UniAbuja Physics Department Course materials and Exam past questions and solutions

Click and select Trusted Root Certification Authorities .

: Download the Microsoft .NET Framework 4.7.2 Offline Installer instead of the web installer to avoid network-related certificate issues during the process.

: Sometimes the installer is blocked by a missing D3DCompiler_47.dll . You can resolve this by installing KB4019990 . Troubleshooting Tips

: This update helps resolve certificate validation failures on Windows 7.

The most effective way to bypass this error is to manually add the missing Microsoft certificate to your system’s trusted store.

: Click Install Certificate... to open the Certificate Import Wizard. Select Store :

: Run the .NET Framework 4.7.2 installer again. Secondary Fix: Install Required Security Updates

: Click Next , then Finish . You should see a message saying "The import was successful."

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