NOTE: If you have already deleted the Jdbgmgr.exe file, in most cases, you do not have to reinstall it. The following is quoted from the Microsoft Knowledge Base article
"The Microsoft Debugger Registrar for Java (Jdbgmgr.exe) is only used by Microsoft Visual J++ 1.1 developers.
If you follow the e-mail message instructions and delete this file, you do not have to recover it unless you use Microsoft Visual J++ 1.1 to develop Java programs on Windows XP, Windows NT 4.0, Windows 98 Second Edition, Windows 98, or Windows 95."
If you do need to restore this file, follow the instructions in
