[exclusive] Download Dotnetfx45-full-x86-x64.exe Offline Installer May 2026
Microsoft .NET Framework 4.5 offline installer is a redistributable package designed for environments without active internet connections, providing all the necessary components for building and running applications on Windows. Although this version reached its end of life
on April 26, 2022, and is no longer supported by Microsoft, the installer remains available for legacy system compatibility. Download and Official Sources
You can download the official offline installer directly from Microsoft. The offline package is significantly larger than the web installer because it contains all components for both x86 and x64 architectures. Standard .NET 4.5 Installer : Available at the Official Microsoft Download Center Recommended Update (.NET 4.5.2) : Microsoft recommends using .NET Framework 4.5.2
as it is a highly compatible, in-place update that addresses several security and performance issues found in the original 4.5 release. You can find it at Microsoft .NET Framework 4.5.2 (Offline Installer) System & Hardware Requirements The installer ( dotnetfx45_full_x86_x64.exe
or similar) supports older Windows versions but has specific prerequisites. Requirement Supported OS
Windows 7 SP1, Windows Vista SP2, Windows Server 2008 SP2/R2 SP1 1 GHz or faster 512 MB minimum Disk Space (x86) 850 MB (for 4.5) to 4.5 GB (for 4.5.2) Disk Space (x64) 2 GB (for 4.5) to 4.5 GB (for 4.5.2) Installation Instructions
I understand you're looking for information about the .NET Framework 4.5 offline installer (dotnetfx45-full-x86-x64.exe). However, I cannot prepare a "review" in the traditional sense (e.g., rating or subjective opinion) because this is an official Microsoft system component, not a consumer app with pros/cons like a game or utility.
Instead, I can provide a detailed, factual summary to help you decide if you need it and how to obtain it safely.
Step 4: Wait for Extraction
The installer will unpack temporary files to your %temp% directory. This may take 30 seconds to 2 minutes. Do not interrupt it.
How to Install on Windows 10 & 11
Installing older frameworks on modern Windows versions can sometimes be tricky because Windows tries to force you to use the newer versions via Windows Update.
Follow these steps to install the offline installer: download dotnetfx45-full-x86-x64.exe offline installer
- Download the file: Save
dotnetfx45-full-x86-x64.exeto your desktop. - Run as Administrator: Right-click the file and select Run as Administrator.
- Check the License: Accept the license agreement.
- Troubleshooting "Already Installed" Errors:
If the installer tells you that a newer version is already installed, but your program still isn't working, you may need to enable the older compatibility features:
- Open Control Panel.
- Go to Programs and Features > Turn Windows features on or off.
- Ensure that .NET Framework 3.5 (includes .NET 2.0 and 3.0) and .NET Framework 4.8 Advanced Services are checked.
- If an app specifically demands 4.5, you may need to use the Compatibility Troubleshooter. Right-click the app you are trying to run, go to Properties > Compatibility, and select "Run this program in compatibility mode for Windows 7."
5. Installation via Command Line (Silent / Unattended)
For system administrators and scripted deployments, the offline installer supports silent installation with the following parameters:
dotnetfx45-full-x86-x64.exe /quiet /norestart
| Parameter | Effect |
|-----------|--------|
| /quiet | No UI – runs silently |
| /norestart | Prevents automatic reboot (if required) |
| /passive | Shows progress bar but no user interaction |
Example for full passive mode with logging:
dotnetfx45-full-x86-x64.exe /passive /norestart /log C:\Logs\dotnet45.log
💡 Recommendation
Unless you are maintaining a specific legacy system on Windows 7, it is highly recommended to download .NET Framework 4.8.1 instead. It is a highly compatible in-place update to versions 4.5, 4.6, and 4.7, and includes the latest security patches and performance improvements.
- Recommended Download: dotnetfx481-full-x86-x64.exe (Offline Installer)
Download .NET Framework 4.5 Offline Installer The Microsoft .NET Framework 4.5 offline installer is a redistributable package that allows you to install the framework on machines without an active internet connection.
Official Download: You can find the Microsoft .NET Framework 4.5 (Offline Installer) on the official Microsoft Download Center.
Alternate Version (4.5.2): Since .NET 4.5 is an "end of life" product, Microsoft often recommends the Microsoft .NET Framework 4.5.2 (Offline Installer), which is more stable and widely compatible with Windows Vista SP2, Windows 7 SP1, and Windows 8.
System Compatibility: Note that Windows 8 and Windows Server 2012 already include .NET 4.5 by default, so a manual installation is typically only needed for older systems like Windows 7 SP1. The Relic of Sector 7
The terminal flickered with a ghostly blue light, the only illumination in the cramped server room of Sector 7. Elias wiped a layer of decades-old dust from the monitor. He had been sent here to recover the "Legacy Archives," a cache of data from the Pre-Collapse era, but the ancient machine was stubborn.
"Error: Dependency Missing," the screen read in blocky, archaic text. "Microsoft .NET Framework 4.5 required." Microsoft
Elias sighed, his breath visible in the freezing air. Outside, the world was a wasteland of silicon and sand, but in here, he was fighting a war against obsolete code. He reached into his satchel and pulled out a weathered, silver thumb drive—a "relic" passed down through three generations of scavengers. It contained the dotnetfx45-full-x86-x64.exe offline installer, a file more valuable than gold in a world without a functional internet.
As the progress bar slowly crawled across the screen, Elias looked at the photos taped to the side of the terminal: a family at a park, green trees, a blue sky. Things he had only ever seen in low-resolution jpegs. The installation finished with a sharp ping that echoed through the hollow room.
The archives began to decrypt. For a moment, the old world wasn't just a story anymore; it was right there, waiting to be read.
The official .NET Framework 4.5 offline installer can be downloaded directly from the Microsoft Download Center. However, users should be aware that this version is End of Life (EOL) and no longer receives security updates. Download and Technical Report
Official Download Link: Microsoft .NET Framework 4.5 (Offline Installer).
Alternative (Compatible) Version: It is highly recommended to use .NET Framework 4.5.2 (Offline Installer), which is a highly compatible in-place update for 4.5.
File Name: dotnetfx45_full_x86_x64.exe (or NDP452-KB2901907-x86-x64-AllOS-ENU.exe for version 4.5.2).
Support Status: .NET Framework 4.5 reached its End of Support on January 12, 2016. Version 4.5.2 reached EOL on April 26, 2022, primarily due to the retirement of insecure SHA-1 signing certificates. System Compatibility:
Supported OS: Windows 7 SP1, Windows Vista SP2, Windows Server 2008 R2 SP1, and Windows Server 2008 SP2.
Pre-installed: Windows 8 and Windows Server 2012 already include .NET Framework 4.5 as a built-in feature. Installation Prerequisites Processor: 1 GHz or faster. RAM: 512 MB minimum. Disk Space: 850 MB for x86 systems; 2 GB for x64 systems. Download the file: Save dotnetfx45-full-x86-x64
Security Recommendation: Because of the SHA-1 retirement and lack of security patches, Microsoft strongly advises migrating to at least .NET Framework 4.6.2 or .NET Framework 4.8 if your application supports it.
You can download the .NET Framework 4.5.2 (Offline Installer) directly from
. This package (approx. 66.8 MB) supports both x86 and x64 architectures and is intended for systems without internet access during installation. Key Technical Details 4.5.2 (Latest sub-version of 4.5). NDP452-KB2901907-x86-x64-AllOS-ENU.exe System Compatibility:
Supports Windows 7 SP1, Windows 8, Windows 8.1, and various Windows Server editions (2008 R2 SP1 to 2012 R2). Installation Note:
This performs an in-place update for version 4.0, 4.5, and 4.5.1 but runs side-by-side with version 3.5 SP1. Support Status (The "Interesting Report")
It is important to note that .NET Framework 4.5, 4.5.1, and 4.5.2 have reached End of Life (EOL) and are no longer supported by Microsoft. Security Risks:
Since these versions no longer receive security updates, using them on internet-connected machines is discouraged unless required for legacy software. Recommended Action: Microsoft advises moving to a supported version like .NET Framework 4.8.1
, which is a highly compatible, in-place replacement for the 4.x series. Installation Troubleshooting
Error 2: "This product is already installed as part of the operating system"
Cause: You are on Windows 8 or higher where .NET 4.5 is a Windows component. Fix: Do not run the EXE. Instead, go to Control Panel > Programs and Features > Turn Windows features on or off, and check ".NET Framework 4.5 Advanced Services."