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- Open a Command Prompt as an administrator and run each of these separately:
- Dism/online /Disable-Feature /FeatureName:IIS-ASPNET45
- Dismdism /online online /Enableenable-Feature feature /FeatureNamefeaturename:IIS–ASPNET45 -ASPNET45 (This can take a moment – wait until you see a progress bar appear and reach 100%)
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