Preview Handler can't show on Win7 x64

[beuckbj]

Hello, I have a Preview handler and it works nice. In the Testshell and also when I register this with the ServerManager to the Windows Explorer. But... When I register the handler with ServerRegistrationManager, it don't work. The problem I discovered is on the class PreviewHandlerRegistrar.CreatePrevhostApp on the line appIdKey.SerValue(...

The code points correct to %SystemRoot%\System32\prevhost.exe. This line is wrote on the registry as %SystemRoot%\SysWow32\prevhost32.exe. This isn't working. When I change the line manually back to system32 the handler works. Any ideas for this strange behavior?

This is the same on different computers.

Thanks for advice.

Bjoern Beuck

Workaround: In VS = ProjectStettings \ Build \ prefer 32 Bit code = unchecked

[Countryen]

Hey @beuckbj, sorry that this issue wasn't answered yet. I'll try to change that and (hoepfully) close the issue soon. Thanks for letting us know about the issue. I will check if this was fixed / is still a problem myself and try to fix it then. Feel free to share any additional info, if you've got any.

We are currently discussing/planning to rework the registration and installation process, so this might be fixed/obsolete then.