diff --git a/.appveyor.yml b/.appveyor.yml
index 18dc78fe5f..90c4861a27 100644
--- a/.appveyor.yml
+++ b/.appveyor.yml
@@ -86,7 +86,10 @@ test_script:
 - ps:  python test\util\bitcoin-util-test.py
 - cmd: python test\util\rpcauth-test.py
 # Fee estimation test failing on appveyor with: WinError 10048] Only one usage of each socket address (protocol/network address/port) is normally permitted.
-- cmd: python test\functional\test_runner.py --ci --quiet --combinedlogslen=4000 --failfast --exclude feature_fee_estimation
+# functional tests disabled for now. See
+# https://github.com/bitcoin/bitcoin/pull/18626#issuecomment-613396202
+# https://github.com/bitcoin/bitcoin/issues/18623
+# - cmd: python test\functional\test_runner.py --ci --quiet --combinedlogslen=4000 --failfast --exclude feature_fee_estimation
 artifacts:
 #- path: bitcoin-%APPVEYOR_BUILD_VERSION%.zip
 deploy: off
diff --git a/.cirrus.yml b/.cirrus.yml
index 4a9bf84525..b839bfa5fb 100644
--- a/.cirrus.yml
+++ b/.cirrus.yml
@@ -28,6 +28,21 @@ task:
     - gmake check ${MAKEJOBS} VERBOSE=1
   functional_test_script:
     - ./test/functional/test_runner.py --jobs 9 --ci --extended --exclude feature_dbcrash --combinedlogslen=1000 --quiet --failfast
+#task:
+#  name: "Windows"
+#  windows_container:
+#    image: cirrusci/windowsservercore:2019
+#  env:
+#    CIRRUS_SHELL: powershell
+#    PATH: 'C:\Python37;C:\Python37\Scripts;%PATH%'
+#    PYTHONUTF8: 1
+#    QT_DOWNLOAD_URL: 'https://github.com/sipsorcery/qt_win_binary/releases/download/v1.6/Qt5.9.8_x64_static_vs2019.zip'
+#    QT_DOWNLOAD_HASH: '9a8c6eb20967873785057fdcd329a657c7f922b0af08c5fde105cc597dd37e21'
+#    QT_LOCAL_PATH: 'C:\Qt5.9.8_x64_static_vs2019'
+#    VCPKG_INSTALL_PATH: 'C:\tools\vcpkg\installed'
+#    VCPKG_COMMIT_ID: 'ed0df8ecc4ed7e755ea03e18aaf285fd9b4b4a74'
+#  install_script:
+#    - choco install python --version=3.7.7 -y
 task:
   name: "x86_64 Linux  [GOAL: install]  [bionic]  [Using ./ci/ system]"
   container: