Hello, @DTMT.
Thanks for posting in the Community. Allow me to help route you to the right support that can assist further in checking the right option for your Windows Server 2011.
Our Desktop Care Support have the tools that'll help determine if we can downgrade or revert the update for the .net framework for your Windows Server. They'll be able to access your account in a secure environment and check this issue further.
Here's how to get their contact information:
- Go to: https://help.quickbooks.intuit.com/en_US/contact.
- Choose your QuickBooks Product.
- Select your QuickBooks Version.
- On the Contact Us page, click a topic.
- Click on the Get Phone Number button to see the support number.
Keep me posted how it goes. I'll be here to help if you have other questions about installing your QuickBooks. Have a good one.
