Nuclos Web Client local file links: Firefox user.js (capability.policy.localfilelinks), default program Windows Explorer.

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hammer and wrench Open links to local files

How to open links to local files from the Web Client (Windows + Firefox).

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The Web Client can open links via hyperlink fields. For security reasons modern browsers block links to local files (file protocol). Below is the setup for Windows + Firefox.

Example: c:\Users\foo\bar.csv is opened as file:///c:/Users/foo/bar.csv.

Firefox security settings

In the profile directory (%appdata%\Mozilla\Firefox\Profiles\{profileId}) create or extend user.js:

user_pref("capability.policy.policynames", "localfilelinks");
// mit Leerzeichen getrennte Liste der Hosts (mit Port)
user_pref("capability.policy.localfilelinks.sites", "http://localhost:8120");
user_pref("capability.policy.localfilelinks.checkloaduri.enabled", "allAccess");
// schaltet den Firefox-eigenen Handler fuer das Protokoll "file" aus
user_pref("network.protocol-handler.expose.file", false);

Choose the default program

On the first click of a file link, Firefox asks for a program – choose Windows Explorer (c:\Windows\explorer.exe) and enable „Remember my choice for file links“.

Program selection in Firefox.

Afterwards each click on a local link opens Explorer directly.

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