Check for locally installed security software:
Check System Tray, Programs & Features, Start Menu, etc. for any installed AntiVirus or Firewalls and temporarily disable them with permission from the user or their IT Pro.
Security software to check for (but not limited to):
Norton 360 Security
McAfee
Trusteer Endpoint Protection
Webroot
AVG
BitDefender
TrendMicro
Avast
Eset
How to enable and unblock ClickOnce Applications:
End-users may encounter an error message when using Microsoft ClickOnce applications, such as TruGrid Connector software:
"Your security settings do not allow this application to be installed on your computer".
TruGrid connector does not launch
Usually, the TruGrid Windows Native Connector will fix the problem:
- Download and install the TruGrid Windows Desktop Connector from here
- If this works, then use the Windows Desktop Connector. If this does not work, see the next steps below.
The other conditions that may cause ClickOnce applications not to run are related to restrictions on the computer. Here is how to fix them.
Browser Site Trust: The ClickOnce Application works within the Browser Trusted Sites setting. Please use these instructions to add TruGrid sites to Internet Options Trusted Site. Return to this page to do the next step.
Registry settings: Due to restrictions, .NET software needs to be configured to support domains in the IE Trusted Site. This can be remediated by your computer administrator by updating the registry. For simplicity, please copy the information between the lines below into NOTEPAD on your local workstation (NOT your Hosted Server). Save the file as a .REG file. Right-click and MERGE the file into the registry. The screenshot at the end of this article shows the BEFORE and AFTER of the registry.
The file is attached to this article below
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Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\.NETFramework]
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\.NETFramework\Security]
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\.NETFramework\Security\TrustManager]
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\.NETFramework\Security\TrustManager\PromptingLevel]
"Internet"="Enabled"
"UntrustedSites"="Disabled"
"MyComputer"="Enabled"
"LocalIntranet"="Enabled"
"TrustedSites"="Enabled"
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For additional details about ClickOnce security, please reference this article from Microsoft.