diff --git a/user.js b/user.js
index 6770bd5..36403ae 100644
--- a/user.js
+++ b/user.js
@@ -629,6 +629,10 @@ user_pref("dom.ipc.shims.enabledWarnings", true);
    // user_pref("dom.ipc.processCount.extension", 1);
 /* 1107: control number of file processes ***/
    // user_pref("dom.ipc.processCount.file", 1);
+/* 1108: block web content in file processes
+ * [WARNING] [SETUP] You may want to disable this for corporate or developer environments
+ * [1] https://bugzilla.mozilla.org/show_bug.cgi?id=1343184 ***/
+user_pref("browser.tabs.remote.allowLinkedWebInFileUriProcess", false);
 /* 1110: set sandbox level. DO NOT MEDDLE WITH THESE. They are included to inform you NOT to play
  * with them. The values are integers, but the code below deliberately contains a data mismatch
  * [1] https://wiki.mozilla.org/Sandbox