If you encounter this warning while attempting to uninstall .NET Framework, be aware that any application dependent on the framework will cease to function. It is generally not recommended to uninstall any version of .NET Framework from your computer, as you may not know which applications rely on it.
Alternatively, run the System File Checker tool by opening Command Prompt as admin and typing sfc /scannow . Once finished, retry the offline installation. Conclusion
The .NET Framework 4.5 brought significant improvements, including:
2026 Supported OS: Windows 7 SP1, 8, 8.1, Server 2008 R2 SP1, Server 2012 (Not recommended for Windows 10/11 beyond registry compatibility) Official source: Microsoft Download Center (ID 30653) microsoft net framework 4.5 offline installer
If the installation fails, check the following common issues and resolutions: 1. Error: "Installation Did Not Succeed"
Check which versions are already installed on your system. If you have a later version, you don't need to install an earlier one.
Second, the offline installer enables silent, unattended deployment—a non-negotiable requirement for system administrators managing hundreds or thousands of workstations. Using the /quiet or /passive command-line flags with the offline installer, an administrator can push the framework via Group Policy, System Center Configuration Manager (SCCM), or remote scripting tools like PowerShell. For example, the command NDP45-KB2858728-x86-x64-AllOS-ENU.exe /quiet /norestart will install the framework without any user interaction. The online bootstrapper does not reliably support such silent modes because its download phase is interactive and network-dependent. If you encounter this warning while attempting to uninstall
Windows Vista SP2, Windows 7 SP1, Windows 8, and various versions of Windows Server (2008/2012).
Ensure you download the standalone executable from an official, trusted Microsoft distribution source or your enterprise's internal repository. The file name typically appears as dotNetFx45_Full_x86_x64.exe and is approximately 48 MB in size. Step 2: Prepare the System Close all active applications on your desktop. Log in with an account.
Complete Guide to Microsoft .NET Framework 4.5 Offline Installer Once finished, retry the offline installation
Developers who need to include .NET Framework 4.5 as a prerequisite for their applications can use the offline installer within their own setup routines. Microsoft recommends using the Web Installer for redistribution whenever possible due to its smaller size, but the offline installer is available for situations where that is not feasible.
Always download the offline installer from an official Microsoft source to ensure the file is safe and uncorrupted.