Cannot read registry keys under HKLM with UAC enabled on Vista?

Posted: 01-20-2009, 08:18 PM

Emmanuel Stapf [ES]

Guest
Posts: n/a

Hi,

I have a program that worked successfully for quite some time and just
recently it stopped working. I tracked it down to a reading of a
registry key located in HKLM\Software where I get an error from the
Win32 API `RegOpenKeyEx' which returns with a value of 2 (that is to say
there is no such entries). But there is such an entry so this is very
puzzling.

What is happening? Why was it working before and not now? The same
program works fine under another vista machine which is more or less
configured the same way.

Of course disabling UAC works but that's out of the question.

Thanks,
Manu

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Responses to "Cannot read registry keys under HKLM with UAC enabled on Vista?"

Ondrej Sevecek

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Posts: n/a

Re: Cannot read registry keys under HKLM with UAC enabled on Vista?

Posted: 01-21-2009, 10:46 AM

what about registry virtualization? is that enabled or disabled and what
about the feature on the other Vista machine?

is the program in question running with Elevated privileges, or just
without?

ondra.

"Emmanuel Stapf [ES]" <manus@newsgroups.nospam> wrote in message
news:OAEqJxzeJHA.1336@TK2MSFTNGP02.phx.gbl...

> Hi,
>
> I have a program that worked successfully for quite some time and just
> recently it stopped working. I tracked it down to a reading of a registry
> key located in HKLM\Software where I get an error from the Win32 API
> `RegOpenKeyEx' which returns with a value of 2 (that is to say there is no
> such entries). But there is such an entry so this is very puzzling.
>
> What is happening? Why was it working before and not now? The same program
> works fine under another vista machine which is more or less configured
> the same way.
>
> Of course disabling UAC works but that's out of the question.
>
> Thanks,
> Manu
>
>

Reply With Quote

Ondrej Sevecek

Guest
Posts: n/a

Re: Cannot read registry keys under HKLM with UAC enabled on Vista?

Posted: 01-21-2009, 10:46 AM

what about registry virtualization? is that enabled or disabled and what
about the feature on the other Vista machine?

is the program in question running with Elevated privileges, or just
without?

ondra.

"Emmanuel Stapf [ES]" <manus@newsgroups.nospam> wrote in message
news:OAEqJxzeJHA.1336@TK2MSFTNGP02.phx.gbl...

> Hi,
>
> I have a program that worked successfully for quite some time and just
> recently it stopped working. I tracked it down to a reading of a registry
> key located in HKLM\Software where I get an error from the Win32 API
> `RegOpenKeyEx' which returns with a value of 2 (that is to say there is no
> such entries). But there is such an entry so this is very puzzling.
>
> What is happening? Why was it working before and not now? The same program
> works fine under another vista machine which is more or less configured
> the same way.
>
> Of course disabling UAC works but that's out of the question.
>
> Thanks,
> Manu
>
>

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