Microsoft .NET Framework 2.0, 3.0, and 3.5 is used by this version of QuickBooks and is integrated with the Windows Vista/Windows 7 operating system which cannot be repaired or installed independently.
You must make sure that .NET Framework 3.5.1 (2.0 and 3.0 if Windows Vista) is enabled in the Turn Windows Features On or Off feature in Windows Vista/Windows 7.
- Open the Start menu and click Computer.
- Click Uninstall or Change a Program in the upper blue bar.
- Click Turn Windows Features On or Off over on the left.
- Make sure Microsoft .NET Framework 3.5.1 (2.0 and 3.0 if Windows Vista) is enabled (blue box or a checkmark is OK).
- If the box for Microsoft .NET Framework is not enabled (not checked), enable it by clicking the box (it will turn blue), then reboot the computer. Note: You do not have to have a checkmark in the box, if the box is highlighted in blue, that means it is enabled.
- If the box is already checked, you can try repairing Microsoft .NET Framework 3.5.1 (2.0 and 3.0 if Windows Vista).
- If the box is blank or you get an error activating a component, please see the Windows features on or off box is blank article.
If you are still experiencing problems, try performing a Windows Update to install missing updates pertaining to .NET Framework, MSXML, and C++. Important: If you encounter any errors performing a Windows Update, contact a qualified IT professional or Microsoft.