On Tue, May 20, 2008 at 4:57 PM, David Mazzaccaro
<[EMAIL PROTECTED]> wrote:
> So I installed SP3 for XP Professional (previously had SP2 installed), and
> now if I try to run "mstsc.exe" I get DEP (Data Execution Prevention)
> closing this program.

  Sounds like the executable, or something it depends on, is corrupted.

  You might try re-extracting the MSTSC.EXE from the SP3 kit.  If it's
a corrupt DLL file, that's harder to figure out.  Also see if there
are registry entries that MSTSC uses, and delete/rename them (maybe
the registry entries are bogus).  Also check for *.RDP files in your
user profile.  Maybe run it with Process Monitor watching to see what
it's doing right before it blows up.  Or maybe try creating a new user
account profile, and see if the problem persists there.

> I tried putting a check mark next to remote desktop connection in DEP
> settings, so it supposedly doesn't check that program, but it still closes
> it.

  DEP just watches for certain kinds of highly unusual program
behavior.  Such behavior is almost always a program bug (a buffer
overflow), not intended behavior.  So turning off DEP keeps the
program from being killed by DEP, but it doesn't mean the program
isn't going to crash anyway.

-- Ben

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