diff --git a/accessible/tests/browser/browser.ini b/accessible/tests/browser/browser.ini
index 14374d087658..6ee81f2f3c45 100644
--- a/accessible/tests/browser/browser.ini
+++ b/accessible/tests/browser/browser.ini
@@ -11,7 +11,7 @@ support-files =
 [browser_shutdown_multi_acc_reference_doc.js]
 [browser_shutdown_multi_reference.js]
 [browser_shutdown_parent_own_reference.js]
-skip-if = !e10s || (verify && debug && (os == 'win')) # e10s specific test for a11y start/shutdown between parent and content.
+skip-if = !e10s || (os == 'win' && os_version == '5.1') || (verify && debug && (os == 'win')) # e10s specific test for a11y start/shutdown between parent and content.
 [browser_shutdown_pref.js]
 [browser_shutdown_proxy_acc_reference.js]
 skip-if = !e10s || (os == 'win') # e10s specific test for a11y start/shutdown between parent and content.
@@ -22,11 +22,11 @@ skip-if = !e10s || (os == 'win') || (verify && debug && (os == 'linux')) # e10s
 [browser_shutdown_multi_proxy_acc_reference_obj.js]
 skip-if = !e10s || (os == 'win') || (verify && debug && (os == 'linux')) # e10s specific test for a11y start/shutdown between parent and content.
 [browser_shutdown_remote_no_reference.js]
-skip-if = !e10s || (verify && debug && (os == 'win')) # e10s specific test for a11y start/shutdown between parent and content.
+skip-if = !e10s || (os == 'win' && os_version == '5.1') || (verify && debug && (os == 'win')) # e10s specific test for a11y start/shutdown between parent and content.
 [browser_shutdown_remote_only.js]
-skip-if = !e10s || # e10s specific test for a11y start/shutdown between parent and content.
+skip-if = !e10s || (os == 'win' && os_version == '5.1') # e10s specific test for a11y start/shutdown between parent and content.
 [browser_shutdown_remote_own_reference.js]
-skip-if = !e10s || # e10s specific test for a11y start/shutdown between parent and content.
+skip-if = !e10s || (os == 'win' && os_version == '5.1') # e10s specific test for a11y start/shutdown between parent and content.
 [browser_shutdown_scope_lifecycle.js]
 [browser_shutdown_start_restart.js]
 skip-if = (verify && debug)
diff --git a/testing/firefox-ui/tests/functional/security/manifest.ini b/testing/firefox-ui/tests/functional/security/manifest.ini
index cb39d50f47cf..74f25c842b09 100644
--- a/testing/firefox-ui/tests/functional/security/manifest.ini
+++ b/testing/firefox-ui/tests/functional/security/manifest.ini
@@ -12,6 +12,7 @@ tags = local
 [test_security_notification.py]
 [test_ssl_disabled_error_page.py]
 [test_ssl_status_after_restart.py]
+skip-if = (os == "win" && os_version == "5.1") # Bug 1167179: Fails to open popups after restart
 [test_submit_unencrypted_info_warning.py]
 [test_unknown_issuer.py]
 [test_untrusted_connection_error_page.py]