If you are reading this page, chances are that you have been trying to run an application that is asking to have. NET 3.5 or older, going back to 2.0. The good news is that. NET 3.5 (what is. NET by the way?) can handle all prior. NET versions, so you only need to install it once. The bad news is that the installation will sometimes fail and while the problem is largely documented, the solutions are sparse and many don’t work. I have bumped into this problem myself with a fresh Windows installation, so I wanted to share how I got out of it. I’ll go through many possible fixes for this, from “easy”, to the more difficult one. Fix 1: enable. NET 3.5 in the control panel Open the Windows control panel, search for “ Turn Windows features on or off” and click on that link. A dialog will open and you can see that. NET Framework 3.5 is unchecked. To add make it active, check it and click OK. In theory, Windows should download the necessary files from the web, install the framework, and that’s it. Congratulations, you can now run your app. Unfortunately, many users will encounter a dreaded error code 0x800 F0906. Fix 2: what is code 0x800 F0906 and how to go around it A number of errors associated with this particular error is documented in the official Windows support site. The error means that for some reason, Windows is not able to download the necessary files to install. NET 3.5. This is a fairly generic error, and of course, the first thing that Microsoft says is “check your Internet connection” which is a fair question, but most likely, your Internet runs just fine, and this is how you got to this site. The first thing that I tried was to download a 175 MB full distribution of NET 3.5, but the installation failed as well, proving that this was not an Internet connectivity issue. Since the download doesn’t work, the other solution is to install the framework from a local.
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We know that Windows 8 and later operating systems don't come with Microsoft. NET Framework 3.5 but there are many 3rd party software programs which require. NET Framework 3.5 installed in Windows. So people use online or offline methods to install. NET Framework 3.5 in Windows 8 or later as given in following tutorials: But there are a few people who have faced problems while installing. NET Framework 3.5. When they try to install it, they receive error messages such as the source files could not be found or downloaded, etc. These error messages contain different error codes such as 0x800 F081 F or 0x800 F0906. To fix these problems, we posted a troubleshooting article which allows you to install. NET Framework 3.5 in Windows 8 and later without receiving any error messages: The above mentioned guide helped a lot of people and fixed the error messages but still there were a few people who were not able to install. NET Framework 3.5 in Windows 8 and later. Then an Ask VG reader Patrik posted a different solution which worked for those people. Patrik: I have three Surface Pro 3 with Windows Pro 8.1 that have the same issue. NET Framework 3.5 will not install. I've tried both via DISM, Programs and Features and via full install setup. I have tried to uninstall every single Windows update on the machine and then install via DISM, but that didn't help either. I even tried to install all three KB-updates ( KB2966826-8) to see if I can uninstall them to get rid of potential dll-files that could be interfere with the. Net 3.5 setup. So I then decided to wipe it clean via Windows own restore system guide. But it didn't even work after I have done a clean Windows install. Immediately after Windows installed I tried to enable the. NET 3.5 feature, and of course DISM didn't work either. I have called MS support to get some assistance, but I guess they will call back in a few days.
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