The installer contains all necessary files.
You are running Windows 7 RTM (no service pack).
Check the box to accept the and click Install . net framework 4.0 3019 download windows 7 offline installer
Improved support for parallel computing and task parallelism. Code contracts and dynamic language runtime (DLR) support.
System administrators can use the offline executable to silently deploy the framework across multiple workstations simultaneously using command-line scripts. The installer contains all necessary files
Ensure the Windows Update service is running (even if offline), as .NET relies on background system servicing infrastructure. Step 3: Run the Installation
: General installation failure with MSI error Improved support for parallel computing and task parallelism
Even though it’s an offline installer, the Windows Update service must be "Enabled" or "Manual" for the framework to register correctly with the OS.
Standalone packages are less prone to file corruption during the actual setup process. System Requirements for Windows 7
: Installer stops responding at a certain point