diff --git a/bin/named/win32/os.c b/bin/named/win32/os.c
index 6705940850..c1fe90410c 100644
--- a/bin/named/win32/os.c
+++ b/bin/named/win32/os.c
@@ -110,6 +110,16 @@ named_os_init(const char *progname) {
 	 * ntservice_init();
 	 */
 	version_check(progname);
+	/*
+	 * If running in a Cygwin environment, clear the SEM_NOGPFAULTERRORBOX
+	 * bit in the process error mode to prevent Cygwin from concealing
+	 * non-abort() crashes, giving Windows Error Reporting a chance to
+	 * handle such crashes.  This is done to ensure all crashes triggered
+	 * by system tests can be detected.
+	 */
+	if (getenv("CYGWIN") != NULL) {
+		SetErrorMode(GetErrorMode() & ~SEM_NOGPFAULTERRORBOX);
+	}
 }
 
 void