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For Windows users, installing additional support or software has become quite common due to the nature of Windows operations. However, the inability to install certain software such as NET Framework is a different story, finding the cause and solution always proves to be a headache.
Fixing NET Framework Installation Error on Windows 10, 8, 7
There are numerous factors leading to the failure of installing NET Framework, thus requiring us to try various methods to resolve this issue. To assist you better in understanding how to fix the inability to install NET Framework on your computer, let's explore the following solutions together with Mytour.
Guide to Fix Installing Errors of NET Framework on Win 10, 8, 7
What is NET Framework?
Before delving into the details of fixing the inability to install NET Framework, let's take a moment to understand the significance of NET Framework and its role in computers.
Microsoft .NET Framework is Microsoft's programming model, providing a shared library to support applications programmed and run on the .NET platform. Hence, in certain instances, when installing or running a program, you may encounter prompts to install NET Framework. Sometimes, you may need to install multiple versions of NET Framework on your machine, as the latest version doesn't necessarily encompass all older versions.
How to Fix Unable to Install NET Framework?
Error 0x800F081F and 0x800F0906
Error 0x800F081F and 0x800F0906 are among the most common errors users face when installing .NET Framework 3.5. Below are details regarding these error codes:
- Error 0x800F081F: Unable to locate the source files.
- Error 0x800F0906: Unable to download the source files.
Even when connected to the Internet, if you're still facing this issue, it might be due to installing the following Windows updates:
1. KB2966826
2. KB2966827
3. KB2966828
These are security updates for .NET Framework 3.5 that must be installed on the current Framework setup. However, because Microsoft applies these updates regardless of whether Framework 3.5 is installed or not, the updates will still be installed even if Framework is not installed.
If these updates are installed before you install Framework, errors 0x800F081F and 0x800F0906 will occur. To resolve the error, what you need to do is uninstall the above updates, then install .NET Framework 3.5, and finally reinstall the updates.
Fixing “HRESULT 0xc8000222 while upgrading Plesk” error during .NET Framework 4.5 installation
Installation of .NET Framework 4.5 fails, displaying the error message “HRESULT 0xc8000222 while upgrading Plesk” on the screen.
Cause of the error
The cause of HRESULT 0xC8000222 error is attributed to Windows Update.
Fixing the error
Follow the steps below to fix the “HRESULT 0xc8000222 while upgrading Plesk” error during .NET Framework 4.5 installation:
Step 1: Connect to the server via RDP.
Step 2: Open Command Prompt and enter the following command to stop the Windows Update service:
net stop WuAuServ
Repeat the steps until a message indicating successful service stoppage is displayed.
Step 3: Access the Windows directory, change permissions, and rename the folder by executing each of the following commands one by one:
cd %windir%
icacls 'SoftwareDistribution' /grant Everyone:F
move SoftwareDistribution SoftwareDistributionold
Step 4: Execute the following command in the Command Prompt window to activate Windows Update:
net start WuAuServ
Step 5: Attempt to reinstall .NET Framework again.
Step 6: If the issue persists, restart the server and try reinstalling again. Alternatively, contact Microsoft for assistance if needed.
Fixing errors using Services
Step 1: First, we need to access the Services management tool by pressing Windows + R and then typing 'services.msc' to enter.
Step 2: After successfully accessing Services, check if Windows Update is activated. Keeping your operating system up to date is also a measure to fix the inability to install NET Framework. Remember to right-click (or double-click) and select Properties.
Step 3: In Windows Update Properties, select Automatic for the Startup type to automatically update Windows to the latest version when available. Additionally, don't forget to Start and Apply > OK to confirm the action.
Step 4: Next, press the Windows + R key combination again and type 'Gpedit.msc' to access the Local Group Policy Editor.
Step 5: In the Local Group Policy Editor, navigate to Local Group Policy Editor > Computer Configuration > Administrative Template > System.
And in System, locate a file named Specify settings for optional... then right-click and choose Edit to make adjustments.
Step 6: Here, you just need to set it to Enabled, then Apply > OK, and you're done.
Afterward, remember to restart your computer and reinstall NET Framework to see if the issue of unable to install NET Framework on your computer has been resolved. Additionally, you can also try another method to install NET Framework if you prefer not to fix the NET Framework installation error using the method above.
Step 1: Open the Start Menu, then search for 'control panel' to access Control Panel.
Step 2: In Control Panel, proceed to Uninstall a program section.
Step 3: Within the Uninstall a program section, we won't uninstall any software, instead, there's an option Turn Windows features on or off - click on it.
Step 4: In Windows Features, you'll find the NET Framework installation option, simply click on it and then press OK to select installation.
Afterwards, the system will automatically install NET Framework for you, this process will only take 1 to 2 minutes.
When the Windows Completed requested Changes notification appears, simply close it and restart your computer. This method makes installing NET Framework simpler, but it only applies to versions 3.5 and 4.0. For other versions, it won't help you fix NET Framework installation errors.
If you need a newer version of NET Framework on your system, you can uninstall the old NET Framework to lighten the load on your machine. The steps to uninstall NET Framework are similar to uninstalling software in Windows.
Additionally, if you're using Windows 10, you can follow the second method. This method helps you activate NET Framework on Windows 10 easily and quickly. However, it only applies to Windows 10. For Windows 7, only NET Framework 3.5 is available; NET Framework 4.0 is not included like when activating NET Framework on Win 10.
