Windows mail shows software restriction policy On Windows Vista

I'm running Windows Vista along with Windows mail on my system. The problem is that when i try to open Windows mail on my ssytem, it shows me an error messag stating that there is a software restriction policy preventing Windows mail from opening. Can any body tell me that what does this error means? Does any body have any idea baout it? Kindly provide me the correct solution for the above issue.

You having such problem on your system, only when the software restriction policy enforcement is set to all software files, the reason is that the server will check each DLL in order to verify the user is allowed to run/load that DLL. The invalid path names are caused by a problem in advapi32.dll

Try to check out, whether you have the following Computer Configuration\Windows Settings\Security Settings\Software Restriction Policies settings correct on your system. If not then try to correct it.

Try to use the registry.pol file in order to patch the machine policies eg. software restriction policy area etc in the registry. Then you can store
the SRP, same as a *.pol file with poledit. Unfortunately Microsoft changed the pol file format so hacking it directly needs some new tools. There's no way that changing the registry will be reflected back in registry.pol because it's a one-way process. I haven't tried it but it may be possible to use the same registry.pol file on multiple systems.