Ctl3d32.dll is mostly common for Windows 95 and Windows NT. It also assists in compatibility concerns of software which need to be ran on the earlier versions of windows. You always need to ensure that you have the correct version of Windows otherwise your system will begin to act up. Not only this, you also have to make ensure that you are running just on one version of Ctl3d32.dll, if not the computer system will once again start to crash or not work properly. From the given download link below you should be able to deal with all the issues that you might be facing with the ctl3d32.dll. Click the given link for the ctl3d32.dll to download.