Programmatically register a SystemPropertyHandler

loop123123 1

In general, property handlers are registered at HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\PropertySystem\PropertyHandlers.

However, for some file types, there are special handlers that are registered at HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\PropertySystem\SystemPropertyHandlers. That branch has some very high security settings.

Let's say you'd like to register a handler for one of the special file types -- like .mp3, for example. Is there a way to obtain the necessary permissions, programmatically, to register a property handler for that file type?

Rita Han - MSFT 2,161 Reputation points

2020-08-19T03:40:33.82+00:00

The .mp3 registry value under PropertyHandlers is same with the one under SystemPropertyHandlers. And SystemPropertyHandlers registry key requires TrustedInstaller permission. Do you mind sharing why do you need access SystemPropertyHandlers branch? What are you trying to do?
loop123123 1 Reputation point

2020-08-19T15:47:27.15+00:00

I'd just like to implement a custom property handler for certain types of media files, like .mp3s.
Castorix31 82,751 Reputation points

2020-08-19T16:20:12.84+00:00

Did you see MS SDK samples, like PlaylistPropertyHandler ?
Rita Han - MSFT 2,161 Reputation points

2020-08-20T05:03:05.837+00:00

For adding a custom property not represented by any properties in the System property schema you can refer to Creating Custom Properties and Recipe Property Handler Sample.
Zhanglong Wu-MSFT 261 Reputation points Microsoft Vendor

2020-09-01T03:24:06.943+00:00

How about the issue, is there anything to update?

Share via

Programmatically register a SystemPropertyHandler