The IceViewer installation installs the IceViewer Chrome / Edge extension by creating a local ExtensionInstallForceList Google Chrome policy in the registry.
In the case of the Domain Controller also using Google Chrome-related policies or installing extensions using the ExtensionInstallForceList policy, it may overwrite the local policy. As a result, the IceViewer Chrome / Edge extension may become unavailable.
One possible solution could be to add the Black Ice IceViewer Chrome extension to the ExtensionInstallForceList policy on your Domain Controller to let the Google Chrome Group Policy install the extension.
The following Google Chrome Group Policy has to be enabled/configured:
Extensions node > Configure the list of force-installed apps and extensions policy
Value: hinllambflhajfhffnaeplcaonpbpkgo;https://clients2.google.com/service/update2/crx
NOTE: The IceViewer Chrome extension requires the Black Ice IceViewer desktop application installed on the computer, therefore we recommend only applying the modified ExtensionInstallForceList policy on computers, where you plan to use the Black Ice IceViewer desktop (thick client) application. The ExtensionInstallForceList policy installs the extension from Google Store.