diff --git a/blockcheck.sh b/blockcheck.sh
index 63e48f4..40dc31d 100755
--- a/blockcheck.sh
+++ b/blockcheck.sh
@@ -396,6 +396,8 @@ check_system()
 			PKTWS="$WINWS"
 			PKTWSD=winws
 			FWTYPE=windivert
+			# ts fooling requires timestamps. they are disabled by default in windows.
+			netsh interface tcp set global timestamps=enabled >/dev/null
 			;;
 		*)
 			echo $UNAME not supported
@@ -1195,6 +1197,7 @@ warn_fool()
 				echo "WARNING ! fakedsplit/fakeddisorder with md5sig fooling and low split position causes MTU overflow with multi-segment TLS (kyber)"
 			;;
 		datanoack) echo 'WARNING ! although datanoack fooling worked it may break NAT and may only work with external IP. Additionally it may require nftables to work correctly.' ;;
+		ts) echo 'WARNING ! although ts fooling worked it will not work without timestamps being enabled in the client OS. In windows timestamps are DISABLED by default.'
 	esac
 }
 pktws_curl_test_update_vary()
@@ -1321,7 +1324,7 @@ pktws_check_domain_http_bypass_()
 			}
 			f=
 			[ "$UNAME" = "OpenBSD" ] || f="badsum"
-			f="$f badseq datanoack md5sig"
+			f="$f badseq datanoack ts md5sig"
 			[ "$IPV" = 6 ] && f="$f hopbyhop hopbyhop2"
 			for fooling in $f; do
 				ok=0
diff --git a/docs/changes.txt b/docs/changes.txt
index 30245ea..8406d39 100644
--- a/docs/changes.txt
+++ b/docs/changes.txt
@@ -531,3 +531,6 @@ v71.3
 
 init.d: FILTER_MARK
 nfqws: ts fooling
+blockcheck: test ts fooling
+blockcheck: silently enable tcp timestamps in windows
+