diff --git a/accessible/tests/mochitest/focus/a11y.ini b/accessible/tests/mochitest/focus/a11y.ini
index 9a9e2c28452..f77cb2ae88e 100644
--- a/accessible/tests/mochitest/focus/a11y.ini
+++ b/accessible/tests/mochitest/focus/a11y.ini
@@ -1,6 +1,7 @@
 [DEFAULT]
 
 [test_focusedChild.html]
+skip-if = (os == 'win' && (os_version == '6.2' || os_version == '6.3')) # bug 845134
 [test_takeFocus.html]
 skip-if = buildapp == 'mulet'
 [test_takeFocus.xul]