Install Microsoft. NET Framework 4 before IIS6 and frameworkiis6.

Install Microsoft. NET Framework 4 before IIS6 and frameworkiis6.
In this case, you must enter the following command to convert ASP. NET 4.0 registered in IIS6: 2.0: C: \ WINDOWS \ Microsoft. NET \ Framework \ v2.0.50727 \ aspnet_regiis.exe-ir-enable 4.0: C: \ WINDOWS \ Microsoft. NET \ Framework \ v4.0.30319 \ aspnet_regiis.exe-ir-enable
Microsoft NET Framework 4 cannot be installed

If it is an XP system, do this:
1. Start -- run -- Enter cmd -- press enter -- enter net stop WuAuServ in the open window
2. Start -- run -- enter % windir %
3. There is a folder named SoftwareDistribution in the open window, rename it as SDold
4. start -- run -- Enter cmd -- press enter -- enter net start WuAuServ in the open window
5. Install. NET Framework 4.0

Use the following method for Win7:
1. Run the cmd.exe program in the folder X: \ Windows \ system32 as an administrator (X is the system drive letter, usually C)
2. Enter net stop WuAuServ
3. Rename the X: \ Windows \ SoftwareDistribution \ folder to SDold.
4. Repeat the first step and enter net start WuAuServ.
5. Run the. NET Framework 4.0 installer as an administrator.

How to install Microsoft NET Framework 40

If you have a custom image, you should choose the one you want to install. Do not press it too quickly and check it carefully step by step.
If you are familiar with. NET Framework4.0, you can customize it. If you are not familiar with the framework, you are advised to install it according to the instructions of the system installation. Generally, the installation of the system is more suitable for common users.