Remote Apps pops up screen untrusted publisher if you start a program with .exe (Win2K8 Standaard TS)

We are using a RDWEB page. If you enter this you see a few programs to start.(remote apps)
If you start a program that is on a share it gives a popup : untrusted publisher, click ok to continue. (office applications on the c: are going straight away)
How can i get rid of this ?

 i tried : User Configuration > Administrative Templates > Windows Components >
Attachment Manager- then set -Inclusion list for low file types- to
Enabled and enter the file types you don't want to be warned about in
the box (for example: .exe).
this is working indeed on the TS if you start the executable, but if you login via the url RDWEB it still pops up.

I tried to add it to the trusted zone, but still no solution.
Anyone have an idea ?
venema1Asked:
Who is Participating?
 
venema1Connect With a Mentor Author Commented:
It was not a policy finally. After killing all terminal server logins it finally was working. Somehow this seems hanging and caused the problem after all.

So this can be closed at last
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motnahp00Commented:
Are you using a self-signed cert or one issued by a local/trusted CA?
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venema1Author Commented:
on the application is local/trusted CA
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motnahp00Commented:
Did you verify that the root CA's certificate was added to Certificates (Local Computer) -> Trusted Root Certification Authorities -> Certificates? I normally do this through GPO just make sure all my machines have this cert.
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venema1Author Commented:
It has nothing to do with the certificate. I login into the RDWEb page and than select a remote app.
It starts a remote desktop session and than pops up :
Cannot verify the pubisher. Are you sure you want to execute the software:
G:\appname\app.exe
Publisher : Unknown Publisher
Type : Application
From : G:\appname\app.exe
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motnahp00Commented:
Which cert are you using here?

RemoteApp Manager -> Digital Signature Settings
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venema1Author Commented:
It's a RapidSSL CA Certificate. We also tried unchecking the signing with a digital certificate but that doesn't matter. (turn on or turn off, still the pop up.)
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McKnifeCommented:
Hi.
Click http://technet.microsoft.com/en-us/library/cc771261(v=ws.10).aspx and read the section where it says
Specify SHA1 thumbprints of certificates representing trusted .rdp publishers
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venema1Author Commented:
no one gave the solution
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