This usually points to corrupted temporary system files or conflicts with a previous .NET installation.
Windows 7 lacks the updated Root Certificates required to verify Microsoft's digital signature on the installer file. This usually points to corrupted temporary system files
You may have mistakenly downloaded the . The genuine offline installer does not download anything. If you see a progress bar saying “Downloading,” cancel and re-download the correct full package (look for the large file size). This usually points to corrupted temporary system files
A previous partial installation or corruption. Solution: This usually points to corrupted temporary system files