--- a/browser/components/enterprisepolicies/Policies.jsm
+++ b/browser/components/enterprisepolicies/Policies.jsm
@@ -747,17 +747,21 @@ var Policies = {
                 log.debug(`Add-on ID (${addon.id}) couldn't be uninstalled.`);
               }
             }
           }
         }
       }
       if (blockAllExtensions) {
         for (let addon of addons) {
-          if (addon.isSystem || addon.isBuiltin) {
+          if (
+            addon.isSystem ||
+            addon.isBuiltin ||
+            !(addon.scope & AddonManager.SCOPE_PROFILE)
+          ) {
             continue;
           }
           if (!allowedExtensions.includes(addon.id)) {
             try {
               // Can't use the addon from getActiveAddons since it doesn't have uninstall.
               let addonToUninstall = await AddonManager.getAddonByID(addon.id);
               await addonToUninstall.uninstall();
             } catch (e) {