diff --git a/.github/workflows/test.yaml b/.github/workflows/test.yaml
index e31357d..e8cc9fb 100644
--- a/.github/workflows/test.yaml
+++ b/.github/workflows/test.yaml
@@ -85,6 +85,9 @@ jobs:
   test-windows:
     name: "Windows Jtreg"
     runs-on: "windows-latest"
+    defaults:
+      run:
+        shell: C:\tools\cygwin\bin\bash.exe --login --norc -o igncr '{0}'
     strategy:
       fail-fast: false
       matrix:
@@ -104,16 +107,25 @@ jobs:
             jdkver: "21"
     steps:
       - uses: actions/checkout@v3
-      - uses: msys2/setup-msys2@v2
+      - name: Set up Cygwin
+        uses: egor-tensin/setup-cygwin@v4
         with:
-          update: true
-          install: wget tar
-      - name: Prepare env
-        shell: msys2 {0}
-        run: ./run.sh "${JAVA_HOME}"
+          packages: wget tar bash dos2unix
+      - name: Set up JDK
+        uses: actions/setup-java@v3
+        with:
+          distribution: 'temurin'
+          java-version: ${{ matrix.jdkver}}
+      - name: Run
+        run: |
+             set -ex
+             cd "$GITHUB_WORKSPACE" ; pwd; ls -l
+             echo "it seems default shell do not honour -o igncr nor --norc"
+             dos2unix -v run.sh
+             find test -type f  -name "*.sh" -exec dos2unix -v {} \;
+             bash.exe --login --norc -o igncr -x -c "cd /cygdrive/d/a/jtreg-buffer/jtreg-buffer && ./run.sh \"${JAVA_HOME}\""
       - name: Upload results
         if: ${{ always() }}
         uses: actions/upload-artifact@v3
         with:
           path: "test.*.tar.gz"
-
diff --git a/run.sh b/run.sh
index 696ae83..96d0061 100755
--- a/run.sh
+++ b/run.sh
@@ -16,6 +16,19 @@ while [ -h "$SCRIPT_SOURCE" ]; do # resolve $SOURCE until the file is no longer
 done
 readonly SCRIPT_DIR="$( cd -P "$( dirname "$SCRIPT_SOURCE" )" && pwd )"
 
+OS=`uname -s`
+CYGWIN="false"
+case "$OS" in
+  Windows_* | CYGWIN_NT* )
+    PS=";"
+    FS="\\"
+    CYGWIN="true"
+    ;;
+  * )
+    echo "Non cygwin system!"
+    ;;
+esac
+
 
 envVarArg="-e:CUSTOM_DUMMY_VARIABLE=true,JAVA_TOOL_OPTIONS,OTOOL_BUILD_ARCH,DISPLAY"
 keys=$(env | grep OTOOL_ | sed "s/=.*//")
@@ -26,14 +39,18 @@ done
 set -e
 set -o pipefail
 
-JAVA=${1}
+JAVA="${1}"
 if [ "x$JAVA" == "x" ] ; then 
   echo "Jdk is mandatory param (bugid is optional)"
   exit 1
 fi;
 
+if [ "x$CYGWIN" == "xtrue" ] ; then
+  JAVA="$(cygpath -pw ${JAVA})"
+fi
+
 if [ "x$JAVA_HOME" == "x" ] ; then 
-  JAVA_HOME=$(dirname $(dirname $(readlink -f $(which javac))))
+  JAVA_HOME="${JAVA}"
 fi;
 
 TIME=$(date +%s)
@@ -61,7 +78,7 @@ if [ "x$JDK_MAJOR" == "x" ] ; then
   if [[ -e "$JAVA/bin/jshell" || -e "$JAVA/bin/jshell.exe" ]] ; then
     jshellScript="$(mktemp)"
     printf "System.out.print(Runtime.version().major())\n/exit" > ${jshellScript}
-    JDK_MAJOR=$( $JAVA/bin/jshell ${jshellScript} 2> /dev/null  | grep -v -e "Started recording"  -e "copy recording data to file"  -e "^$"  -e "\[" )
+    JDK_MAJOR=$( "$JAVA/bin/jshell" ${jshellScript} 2> /dev/null  | grep -v -e "Started recording"  -e "copy recording data to file"  -e "^$"  -e "\[" )
     rm ${jshellScript}
   fi
 fi
@@ -87,9 +104,15 @@ fi
 
 echo Running with $JAVA...
 
+
+JTREG_JAR="$JTREG_HOME/lib/jtreg.jar"
+if [ "x$CYGWIN" == "xtrue" ] ; then
+  JTREG_JAR="$(cygpath -pw ${JTREG_JAR})"
+fi
+
 r=0
 mkdir -p test.${TIME}/jdk/JTwork test.${TIME}/jdk/JTreport
-${JAVA_HOME}/bin/java -jar $JTREG_HOME/lib/jtreg.jar -v1 -a -ignore:quiet \
+"${JAVA}/bin/java" -jar "$JTREG_JAR" -v1 -a -ignore:quiet \
   -w:test.${TIME}/jdk/JTwork -r:test.${TIME}/jdk/JTreport \
   -jdk:$JAVA \
   -xml \