I saw a post in the MSExchange.org forums yesterday where a chap was having problems installing the 32bit Management Tools for Exchange 2007 (Service Pack 1) onto his Windows XP workstation.
Essentially every-time that he tried to install the tools during the preparation process of SETUP he would receive the following error message:
Service Remote Registry failed to reach status “Stopped”
He explained that when he tried to restart the Remote Registry Service manually but the service would hang when attempting to stop (he would receive the usual failed to stop within the timeout period).
I asked him if he rebooted his workstation and then tried Setup again – to which (unsurprisingly) he answered he had.
I had a quick think and asked him to perform the following:
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In the Services Manager MMC on his workstation – set the Remote Registry Service Startup to “Disabled” – then reboot
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When the workstation had rebooted I asked him to set the Remote Registry Service Startup to “Manual” – then try the installation again.
On this occasion the setup process ran, and he was able to complete the installation of the Management tools.
I hope that helps someone.

Thanks! This helped me tremendously.
By: Eric Darby on February 19, 2008
at 2:20 pm
As with Eric above, this saved me losing even more hair than I already have! I’ve spent the last 5 hours trying to get this installed just to test something.
Thank you muchly!
By: Chris on February 28, 2008
at 7:40 pm
Magic – simple when you know how!
By: Charlie Reid on May 7, 2008
at 1:02 pm
I also found it helps to terminate terminal services when following this procedure – not absoluteluy sure why
To close the terminal services, follow these steps:
(i) Click Start > Run
(ii) Type services.msc /s and click OK or hit Enter.
(iii) Double-click terminal services listing.
By: Kay Brenner on May 11, 2008
at 9:48 pm
Thanks! That really saved my bacon!
By: Dan Vandervaart on May 15, 2008
at 8:05 pm