diff --git a/toolkit/components/enterprisepolicies/EnterprisePolicies.js b/toolkit/components/enterprisepolicies/EnterprisePolicies.js
--- a/toolkit/components/enterprisepolicies/EnterprisePolicies.js
+++ b/toolkit/components/enterprisepolicies/EnterprisePolicies.js
@@ -447,21 +447,28 @@ class JSONPoliciesProvider {
 
   get failed() {
     return this._failed;
   }
 
   _getConfigurationFile() {
     let configFile = null;
     try {
-      configFile = Services.dirsvc.get("XREAppDist", Ci.nsIFile);
+      configFile = Services.dirsvc.get("XREAppDistUser", Ci.nsIFile);
       configFile.append(POLICIES_FILENAME);
-    } catch (ex) {
-      // Getting the correct directory will fail in xpcshell tests. This should
-      // be handled the same way as if the configFile simply does not exist.
+    } catch (ex) {}
+
+    if (!configFile) {
+      try {
+        configFile = Services.dirsvc.get("XREAppDist", Ci.nsIFile);
+        configFile.append(POLICIES_FILENAME);
+      } catch (ex) {
+        // Getting the correct directory will fail in xpcshell tests. This should
+        // be handled the same way as if the configFile simply does not exist.
+      }
     }
 
     let alternatePath = Services.prefs.getStringPref(PREF_ALTERNATE_PATH, "");
 
     // Check if we are in automation *before* we use the synchronous
     // nsIFile.exists() function or allow the config file to be overriden
     // An alternate policy path can also be used in Nightly builds (for
     // testing purposes), but the Background Update Agent will be unable to
diff --git a/toolkit/xre/nsXREDirProvider.cpp b/toolkit/xre/nsXREDirProvider.cpp
--- a/toolkit/xre/nsXREDirProvider.cpp
+++ b/toolkit/xre/nsXREDirProvider.cpp
@@ -40,16 +40,17 @@
 #include "mozilla/dom/ScriptSettings.h"
 
 #include "mozilla/AutoRestore.h"
 #include "mozilla/Components.h"
 #include "mozilla/Services.h"
 #include "mozilla/Omnijar.h"
 #include "mozilla/Preferences.h"
 #include "mozilla/Telemetry.h"
+#include "nsPrintfCString.h"
 
 #include <stdlib.h>
 
 #ifdef XP_WIN
 #  include <windows.h>
 #  include <shlobj.h>
 #  include "WinUtils.h"
 #endif
@@ -98,17 +99,17 @@ static already_AddRefed<nsIFile> CreateP
 nsXREDirProvider* gDirServiceProvider = nullptr;
 nsIFile* gDataDirHomeLocal = nullptr;
 nsIFile* gDataDirHome = nullptr;
 nsCOMPtr<nsIFile> gDataDirProfileLocal = nullptr;
 nsCOMPtr<nsIFile> gDataDirProfile = nullptr;
 
 // These are required to allow nsXREDirProvider to be usable in xpcshell tests.
 // where gAppData is null.
-#if defined(XP_MACOSX) || defined(XP_WIN)
+#if defined(XP_MACOSX) || defined(XP_WIN) || defined(XP_UNIX)
 static const char* GetAppName() {
   if (gAppData) {
     return gAppData->name;
   }
   return nullptr;
 }
 #endif
 
@@ -456,16 +457,23 @@ nsXREDirProvider::GetFile(const char* aP
   else if (!strcmp(aProperty, XRE_USER_SYS_EXTENSION_DIR)) {
 #ifdef ENABLE_SYSTEM_EXTENSION_DIRS
     return GetSysUserExtensionsDirectory(aFile);
 #else
     return NS_ERROR_FAILURE;
 #endif
   } else if (!strcmp(aProperty, XRE_USER_SYS_EXTENSION_DEV_DIR)) {
     return GetSysUserExtensionsDevDirectory(aFile);
+  } else if (!strcmp(aProperty, XRE_APP_DISTRIBUTION_USER_DIR)) {
+#  ifndef MOZ_WIDGET_GTK
+    return NS_ERROR_FAILURE;
+#  endif
+    return NS_NewNativeLocalFile(
+      nsPrintfCString("/run/user/%d/%s/", getuid(), GetAppName()),
+        false, aFile);
   } else if (!strcmp(aProperty, XRE_APP_DISTRIBUTION_DIR)) {
     bool persistent = false;
     rv = GetFile(NS_GRE_DIR, &persistent, getter_AddRefs(file));
     if (NS_SUCCEEDED(rv))
       rv = file->AppendNative(NS_LITERAL_CSTRING("distribution"));
   } else if (!strcmp(aProperty, XRE_APP_FEATURES_DIR)) {
     rv = GetAppDir()->Clone(getter_AddRefs(file));
     if (NS_SUCCEEDED(rv))
diff --git a/xpcom/build/nsXULAppAPI.h b/xpcom/build/nsXULAppAPI.h
--- a/xpcom/build/nsXULAppAPI.h
+++ b/xpcom/build/nsXULAppAPI.h
@@ -137,16 +137,23 @@
 
 /**
  * A directory service key which specifies the location for app dir add-ons.
  * Should be a synonym for XCurProcD everywhere except in tests.
  */
 #define XRE_ADDON_APP_DIR "XREAddonAppDir"
 
 /**
+ * A directory service key which specifies the distribution specific files for
+ * the application unique for each user.
+ * It's located at /run/user/$PID/<product name>/
+ */
+#define XRE_APP_DISTRIBUTION_USER_DIR "XREAppDistUser"
+
+/**
  * A directory service key which provides the update directory. Callers should
  * fall back to appDir.
  * Windows:    If vendor name exists:
  *             ProgramData\<vendor name>\updates\
  *             <hash of the path to XRE_EXECUTABLE_FILE's parent directory>
  *
  *             If vendor name doesn't exist, but product name exists:
  *             ProgramData\<product name>\updates\