Do you have the update installed? (It's usually required for .NET 4.5).
The Microsoft .NET Framework 4.5 was released on August 15, 2012, as an in-place update to versions 4.0 and 4.5 Release Candidate. For Windows 7 users, it must be installed manually as it is not included by default in the operating system. microsoft net framework 4.5 offline installer for windows 7
There are two primary methods to install the framework: Do you have the update installed
Web installers download files during the setup process. If your connection drops, freezes, or experiences high latency, the installation will fail or become corrupted. or experiences high latency