Carol C -

Depending on which version of Windows you're using, the jdbgmgr.exe file should be in \Windows\System or in WINNT\System32 directory.

Windows does incorporate some "self-fix" features that are not too well known. Particularly for things in the "System" directory (dir name may vary) when a Registry entry calls for a file that is missing, Windows can look in backup stores and sometimes can replace it. It is possible that you deleted it, and Windows put it back - although this can only(?) happen during a reboot in the ordinary manner of things.

If your machine is set up with an "administrator" password, it might also be set to prohibit a "user" from messing with things in the System folder. In the usual course of things, it would give you an "error message" that says something like "access not authorized," if this were the case; but there are a lot of variables in possible configurations.

There is also a setting in Win Explorer (some versions) where you can "turn off" the "confirm before delete" function, and avoid the "Are you sure you want to delete ...." message that you would otherwise get. (Right click on the "Recycle Bin" in most versions.) If the "confirm" switch is off, other messages - like "xxx.exe is a program file. If you delete it you may not be able to run some programs" may also fail to display.

With the "confirm" function off, a delete may fail without informing you that it wasn't done - in some configurations.

You cannot (normally) delete a file that is open or in use. Since the file in question is a "java" file (sort of a "webby" thing), if you are using "web view" and are using an "animated" desktop of any sort, it may be opened automatically(?) and any attempt to delete it would fail.

In short - there are a number of things that could cause what you describe, (allow for the detail in your description) but there is little that someone without access to your machine is likely to sort out. You will need to decide whether it worries you enough to seek local help - or stand by and see if someone else sees a better answer.

John