<p>I have created a windows installer for a windows forms app as an MSI.
I have published this and put it in a zip file and sent it to the client.
When they try to run the installer they get the message 
'The publisher could not be verified. Are you sure you want to run this software?’</p>

<p>Is there a setting or something i need to do to stop this message appearing when the client clicks on the installer?</p>

<p>Cheers</p>

Is this a certificate issue? I haven't had to do this with msi (I usually use ClickOnce, which makes this very easy), but a quick search shows things like
this
or on MSDN
here
.
Note that your certificate would have to be in the clients trust chain - i.e. indirectly from someone "pucka".