The issue normally occurs due to a third-party application or process trying to communicate with a web server. The TMPROXY service, however, catches this HTTP request and is unable to pass this information onto the web server.
To resolve the issue, choose your product version below and follow the steps:
- Stop the TMProxy service.
- Open the Registry Editor.
Always back up the whole registry before making any modifications. Incorrect changes to the registry can cause serious system problems.
- Go to [HKEY_LOCAL_MACHINE\SOFTWARE\TrendMicro\NSC\TmProxy\WhiteList].
For newer operating systems like Windows 8, 8.1, 2012 & newer, set the exclusions in the following registry key:
HKEY_LOCAL_MACHINE\SOFTWARE\TrendMicro\Osprey\WhiteList - Set the value of the following key:
DWORD Value: UseWhiteList
Value: 00000001 - Go to [HKEY_LOCAL_MACHINE\SOFTWARE\TrendMicro\NSC\TmProxy\WhiteList\WhiteList-Item1].
- Set the value of the following key:
String Value: ProcessImageName
Value: process name - Close the Registry Editor.
- Start the TMProxy service.
- Open the Security Server console.
- Go to Preferences > Global Settings.
- Go to the Select Desktop/Server tab.
- Locate Web Reputation and URL Filtering Exclusion settings:
- Type a process name in the field provided, and then click Add.
The table below shows the input limitation for the field shown in the image above:
| Max Length | 256 characters |
| Max Item Count | 100 |
| Default Forbidden Process (Not allowed to add) | ieplore.exe chrome.exe firefox.exe |
| Wild card * Support | No |