Quickly Fix "Mainframe Must Be Already Created By Now As This DLL is Demand Loaded" Message MAINFRAME MUST BE ALREADY CREATED BY NOW AS THIS DLL IS DEMAND LOADED Issues while connecting to the integration manager can lead to the QuickBooks event ID 4 error. This error is accompanied by a message stating that "mainframe must be already created by now as this DLL is demand loaded," which can prevent users from launching the integration manager tool. The error code can occur due to some common scenarios, like damaged QBW files or Windows registry problems, and can be dismissed by following the reliable steps below. If you are unable to perform the detailed solutions below, or these steps seem too challenging or complicated to undertake, you can call our QB experts at +1-855-738-2784 to get the best assistance with the integration issues in the app. Leading Reasons and Triggers Leading to the QuickBooks Integration Manager Error QuickBooks Desktop event ID 4 error can occur due to the main causes and possible scenarios mentioned below 1. The QBW company files might be damaged or corrupted, and the data files might be missing or stored in an invalid file folder. 2. There are Windows registry issues in the PC, and the registry files might be damaged, corrupted, or contain invalid or improper data entries. 3. Your QuickBooks Desktop installation process might be incomplete or partial, and the installation files might be damaged, corrupted, or improper, leading to integration issues. 4. Essential Windows components, like the NET framework, might be damaged, corrupted, outdated, or missing from the PC, which can cause issues while running QuickBooks on the OS version. 5. There are some malware or virus infections in the system, which can affect QuickBooks while running the integration manager utility. Troubleshooting Steps to Easily Remove QuickBooks Event ID 4 Integration Manager Error QuickBooks error 4 can be effectively rectified by following the detailed solutions given below - Step 1 - Manually Mend the NET Framework from the Programs Section of the Control Panel You can eliminate the QB event ID 4 error code by repairing the framework issues from the control panel. 1. Open the Control Panel from the Windows Start menu and access the Programs and Features section, then choose Uninstall/Change. 2. Select the Uninstall a Program button and choose the Turn Windows Features On or Off option, then locate the NET Framework from the list. 3. Lastly, ensure that the NET Framework 4.5 or Over option is checkmarked and the NET Framework 3.5 SPI option is selected, followed by rerunning QuickBooks to run the integration tool. Step 2 - Run the File Doctor Utility to Repair the QBW File Damage from the Tool Hub Issues while running the integration manager tool can be fixed by running the file doctor tool from the tool hub. 1. Open the QuickBooks Tool Hub and choose the QuickBooks Install Diagnostic Tool option from the Installation Issues section, then initiate the repair process. 2. Next, follow the on-screen prompts to complete the diagnostics, and once done, rerun QuickBooks to ensure that the event ID 4 error message is rectified. Conclusion The "mainframe must be already created by now as this DLL is demand loaded" error message can be successfully addressed by following the reliable steps above. If these solutions seem ineffective in rectifying the integration problems, you can call our QB professionals at +1-855-738-2784 to get immediate help with the error.