Mainframe Must Be Already Created By Now as This Dll is Demand Loaded: Fixing It Quickly If you have received the mainframe must be already created by now as this dll is demand loaded error message, then this blog is what you need to resolve the error. Many users have reported this issue. This issue arises when the users try to work on the QuickBooks and open it. The message that pops up on the screen is mainframe issue. Another situation that caused this error is when the user opens the QuickBooks Integration Manager. The blog cites the reasons below that contribute to the error. If you want to troubleshoot this error, read the blog until the end. While we genuinely want to help you fix this QB Error, if you feel lost, confused, or deviated during the troubleshooting process, please contact 1.855.738.2784 for 24/7 expert assistance. Why Do You Get the Mainframe Error Message? The following are typical causes of the system's QB Desktop Mainframe Created Now Error: • The primary cause is that some third-party apps are incompatible with the most recent version of the "Microsoft.NET framework" component. • Another significant issue that triggers this error message on the PC is a partial or damaged installation of QB Desktop. How Do You Resolve the Dll is Demand Loaded Error? The following is an explanation of the most practical step-by-step fix for the QuickBooks Desktop Mainframe DLL Demand Loaded Error: Solution 1: Install the latest ".NET framework" component after correctly removing the existing one • This method requires you to press the "Programs and Features" menu when the "Control Panel" window appears on the screen. Then, you can tap the "Uninstall a Program" option. • You can now quickly choose the "Microsoft.NET framework" icon and click the "Uninstall/Change" button to complete the necessary removal process. • Subsequently, precisely return to the "Programs and Features" menu and select "Add/Remove Windows Features" before choosing "Microsoft.NET framework." • After that, tick the boxes in the window and press the "OK" button to completely eliminate this part of your computer. • You can then successfully open "QB Integration Manager" by visiting the official Microsoft website and downloading and installing the most recent "Microsoft.NET framework 4.8" component. You can perform the following troubleshooting if this resolution doesn’t help eliminate the error. Solution 2: Make use of the "QB Install Diagnostic Tool" execution • Here, click the necessary download link to access the official Intuit website. There, you can download your computer's "QuickBooks Tool Hub" utility. After that, ensure the "QuickBooksToolHub.exe" file is saved in the correct folder. • You may quickly run the "QuickBooks Install Diagnostic Tool" on your machine by selecting the "Installation Issues" menu on the "QuickBooks Tool Hub" window. • Following that, give your computer a reliable restart before launching "QuickBooks Integration Manager" by following the appropriate procedure. In this blog, you will find the mainframe must be already created by now as this dll is demand loaded error. It then lays out all the possible causes of the error and guides the users in eliminating it. If you have additional questions or queries related to the issue, you can talk with a QB expert about it and consult by calling 1.855.738.2784.