Great news.
.NET Framework 3.5 is included in Windows 10 via Windows Features. You'll need to turn it on though.
Install the .NET Framework 3.5 on Windows 10, Windows 8.1, and Windows 8 | Microsoft Docs
Turn Windows Features On or Off in Windows 10 Apps Features Tutorials
Brink, I tried to download Net Framework 3.5 from the turn Windows Features on or off window but got error code 0x800F081F. I understand that I have to use the command DISM /Online /Enable-Feature /FeatureName:NetFx3 /All but what else do I have to add to the command? I also understand that I need to have my Windows 10 installation DVD in my DVD drive.
If you haven't already, see if this below may help starting with step 2 using the ISO file you downloaded from me.
https://support.microsoft.com/en-us/...81f-0x800f0907
Error code 0x800F0906, 0x800F081F, or 0x800F0907
To fix the error codes for Windows 10, follow these steps:
1. Download the Windows Media Creation tool, and create an ISO image locally, or create an image for the version of Windows that you have installed.
2. Configure the Group Policy as in Method 2, but also follow these steps:
- Mount the ISO image that's created in step 1.
- Point the "Alternate source file path" to the ISO sources\sxs folder from the ISO.
- Run the gpupdate /force command.
- Add the .Net framework feature.
Brink, are you saying I need to use the Media Creation Tool to create an .iso file, or can I use the Build 17063 DVD you sent me the link to, and if so how?
No need to do step 1 since you already have the ISO.
You can use the DVD or mount the ISO file, then pick up at step 2.
Brink, excuse my ignorance, but how do I use the DVD?
To make it easier, you can do a repair install using the DVD or ISO. Afterwards, see if you're able to turn on .NET Framework 3.5.
Brink thanks but firstly if I do a repair install will it affect the security and compatibility settings for my Program files including the Program files x 86? Secondly I have just successfully updated my system to Build 17074, and I assume a repair install would revert to Build 17063.
Isn't there another way to install Net Framework 3.5? Could you please reply to my post #92.
You could technically do a repair install since they are the same version despite the DVD being an older build of the version. Security and compatibility settings would most likely be set back to default though.
We can try running the DISM command in step 5 Option 1 below to see if it can repair the image, and be able to turn on .NET Framework afterwards.
Use DISM to Repair Windows 10 Image Performance Maintenance Tutorials
Brink, I used the DISM command in step 5 Option 1 and it completed successfully. For good measure I ran the sfc /scannow command and it found no integrity violations. I then used the search program called Everything (which is far faster than Windows Search) to look for Net Framework 3.5. It found installers I had tried before without success but also found a Microsoft setup installer-I ran that as an administrator and it succeeded in downloading and installing Net Framework 3.5!! I can send you the installer if you like, but in any case thanks for all your help.
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