An error occurred while trying to run the project. debugging cannot be started. The debugger is not correctly installed. Run the installer to install or restore the debugger.

When you debug a project with visual studio.net 2003, the error dialog box is displayed as follows: An error occurred while trying to run the project. debugging cannot be started. The debugger is not correctly installed. Run and installProgramInstall or restore the debugger. The solution is as follows: 1. Try to register mscordbi again in the command line. DLL (command line Input: regsvr32 mscordbi. DLL) file, which is located in (c: \ winnt \ Microsoft. net \ framework \ v1.1.4322 please find the corresponding directory on your local machine ).
2. Try to register oleaut32.dll again in the command line (enter regsvr32 oleaut32.dll in the command line)
3. Enter the c: \ Program Files \ common files \ microsoft shared \ vs7debug directory in the command line and run the command mdm.exe/regserver. The preceding commands are all input (most important) at the Visual Studio. NET command prompt) And enter the directory mentioned above for execution (of course ). The main cause is that mdm.exe is damaged. Run the last command again. That's all.