How to fix rundll errors manually? You can remove the problematic dll file in Windows Registry But before you proceed, take note that Windows Registry is a very important part of your operating system. Be cautious in all actions you do in it, any mistakes can corrupt your whole system. As much as possible, have a licensed technician look at your Windows Registry.

To open Windows Registry Editor, click on Start> Run. Type regedit in the dialog box and press enter or okay. In the Registry Editor, look for “HKEY_LOCAL_MACHINE> SOFTWARE\ Microsoft\ Windows\ CurrentVersion\ RUN”. This is the registry directory where applications are loaded to the memory by your system when the computer starts up. Choose the WildTangent CDA file, which is rundll32.exe. Delete the said file and reboot your computer. Windows will intuitively replace the file or ignore the changes. You can check out other tech forums that post alternative solutions on how to fix rundll files.