windows mobile 6 emulator not signed with a trusted certificate error

Question

I´m trying to install a program in the windows mobile 6 emulator, running it as standalone image (PPC_USA.BIN). The program installs sucessfully, but when i try to run it, the error msg is:

The file '' cannot be opened. Either is not signed with a trusted certificate, or one of its components cannot be found. If the problem persists, try reinstalling or restoring the file.

Any suggestions?

Answer 1

The application probably requires that security be lowered. So to be able to run it, the device needs to have security lowered at least to the level at which the user is asked for permission when he/she is running an unsigned executable. In the context of Windows Mobile security, it means that the device's security configuration needs to be set to Two-Tier-Prompt, One-Tier-Prompt or Security-Off (see MSDN for more details).

Changing of the security configuration might require device manufacturer's or operator's assistance.

In some cases it can be done by the user. Some of them are listed below:

1. If the user has a registry editor application which can run on the device and can change the device registry (such application needs to be signed by a certificate which is trusted by the device though, or the same issue will repeat itself.)

2. The device has installed Microsoft Windows Mobile development certificates.

3. The device allows the user to install the Microsoft Windows Mobile development certificates.

Of the above, 2 and 3 are more than likely be the case; if so then try the following:

1. Install Windows Mobile SDK (Here)

2. Install <WM SDK>/Tools/Security/SDK Development Certificates/Certs.cab on the device.

3. Go to <WM SDK>/Tools/PocketPC/Security/Security Configuration and use one of the cpf file to change the device's security configuration (see the Readme File located at <WM SDK>/Tools/PocketPC/Security/Security Configuration/ReadMe.txt)

Hope this helps someone, even-though I'm a year or so late...