diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 621d6850..60e4e377 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -16,11 +16,11 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [ubuntu-latest, macos-latest]
+        os: [ubuntu-latest, macos-latest, windows-2019]
         python-version: ['3.7', '3.8', '3.9', '3.10']
         cratedb-version: ['4.8.0']
         sqla-version: ['1.3.24']
-      fail-fast: true
+      fail-fast: false
 
     steps:
       - uses: actions/checkout@v3
@@ -36,13 +36,37 @@ jobs:
           echo "/usr/local/opt/gnu-getopt/bin" >> $GITHUB_PATH
 
       - name: Install dependencies
+        shell: bash
         run: |
           ./devtools/setup_ci.sh --cratedb-version=${{ matrix.cratedb-version }} --sqlalchemy-version=${{ matrix.sqla-version }}
 
+      - name: Fix Windows environment
+        if: matrix.os == 'windows-2019'
+        shell: bash
+        run: |
+          # Disable firewall.
+          netsh advfirewall set allprofiles state off
+
+          # Reset IP stack.
+          netsh winsock reset
+
+          # Disable IPv6.
+          # https://superuser.com/questions/1545288/disable-ipv6-connectivity-on-windows-without-restarting-the-computer
+          netsh interface teredo set state disabled
+          netsh interface ipv6 6to4 set state state=disabled undoonstop=disabled
+          netsh interface ipv6 isatap set state state=disabled
+
       - name: Invoke tests
+        shell: bash
         run: |
           bin/flake8
-          bin/coverage run bin/test -vv1
+
+          test_program=bin/test
+          if [ ${{ matrix.os }} = "windows-2019" ]; then
+            test_program=bin/test-script.py
+          fi
+          bin/coverage run $test_program -vv1
+
           bin/coverage xml
 
       # https://github.com/codecov/codecov-action
diff --git a/DEVELOP.rst b/DEVELOP.rst
index cdd64551..bb2aa992 100644
--- a/DEVELOP.rst
+++ b/DEVELOP.rst
@@ -51,7 +51,16 @@ To run against a single interpreter, you can also invoke::
 are listening on the default CrateDB transport port to avoid side effects with
 the test layer.
 
-Preparing a release
+In order to run the tests on other operating systems than Linux, invoke::
+
+    ./bin/test-quick
+
+This will skip some tests currently not working on macOS. It can also be used
+to speed up the tests, because the tests for testing the test layer will also
+be skipped.
+
+
+Preparing a Release
 ===================
 
 To create a new release, you must:
diff --git a/base.cfg b/base.cfg
index e470e47b..24463d3a 100644
--- a/base.cfg
+++ b/base.cfg
@@ -4,6 +4,7 @@ extends = versions.cfg
 versions = versions
 show-picked-versions = true
 parts = test
+        test-quick
         crate
         scripts
         coverage
@@ -40,6 +41,13 @@ recipe = zc.recipe.testrunner
 defaults = ['--auto-color']
 eggs = crate [test,sqlalchemy]
 
+[test-quick]
+relative-paths=true
+working-directory = ${buildout:directory}
+recipe = zc.recipe.testrunner
+defaults = ['--auto-color', '--ignore_dir', 'testing', '--test', '!test_no_retry_on_read_timeout|test_client_threaded|test_client_keepalive|test_username|test_default_schema']
+eggs = crate [test,sqlalchemy]
+
 [linter]
 recipe = zc.recipe.egg:script
 eggs = flake8
diff --git a/devtools/setup_ci.sh b/devtools/setup_ci.sh
index 6da60665..f564c914 100755
--- a/devtools/setup_ci.sh
+++ b/devtools/setup_ci.sh
@@ -53,12 +53,14 @@ function main() {
   # Replace SQLAlchemy version.
   sed -ir "s/SQLAlchemy.*/SQLAlchemy = ${sqlalchemy_version}/g" versions.cfg
 
-  # Replace CrateDB version.
-  if [ ${cratedb_version} = "nightly" ]; then
-    sed -ir "s/releases/releases\/nightly/g" base.cfg
-    sed -ir "s/crate_server.*/crate_server = latest/g" versions.cfg
-  else
-    sed -ir "s/crate_server.*/crate_server = ${cratedb_version}/g" versions.cfg
+  # Adjust CrateDB version, only on Linux.
+  if [ $(uname -s) = "Linux" ]; then
+    if [ ${cratedb_version} = "nightly" ]; then
+      sed -ir "s/releases/releases\/nightly/g" base.cfg
+      sed -ir "s/crate_server.*/crate_server = latest/g" versions.cfg
+    else
+      sed -ir "s/crate_server.*/crate_server = ${cratedb_version}/g" versions.cfg
+    fi
   fi
 
   buildout -n -c base.cfg
diff --git a/src/crate/client/tests.py b/src/crate/client/tests.py
index 7b19a7fb..1ad3f577 100644
--- a/src/crate/client/tests.py
+++ b/src/crate/client/tests.py
@@ -24,6 +24,8 @@
 import json
 import os
 import socket
+import pathlib
+import sys
 import unittest
 import doctest
 from pprint import pprint
@@ -166,7 +168,11 @@ def setUpWithCrateLayer(test):
             cursor.execute(stmt)
             assert cursor.fetchall()[0][0] == 1
 
+        # Compute path to file for data loading.
         data_path = docs_path('testing/testdata/data/test_a.json')
+        if sys.platform == 'win32':
+            data_path = pathlib.PureWindowsPath(data_path).as_uri()
+
         # load testing data into crate
         cursor.execute("copy locations from ?", (data_path,))
         # refresh location table so imported data is visible immediately
diff --git a/src/crate/testing/layer.py b/src/crate/testing/layer.py
index 3bd3fc99..4b0d9137 100644
--- a/src/crate/testing/layer.py
+++ b/src/crate/testing/layer.py
@@ -225,6 +225,9 @@ def __init__(self,
         self.verbose = verbose
         self.env = env or {}
         self.env.setdefault('CRATE_USE_IPV4', 'true')
+        if sys.platform == 'win32':
+            self.env.setdefault('_JAVA_OPTIONS', '-Djava.awt.headless=true -Djava.net.preferIPv4Stack=true')
+            self.env.setdefault('SystemRoot', 'C:\\Windows')
         self.env.setdefault('JAVA_HOME', os.environ.get('JAVA_HOME', ''))
         self._stdout_consumers = []
         self.conn_pool = urllib3.PoolManager(num_pools=1)
@@ -294,6 +297,7 @@ def _clean(self):
 
     def start(self):
         self._clean()
+        sys.stderr.write("Starting process '{}'\n".format(self.start_cmd))
         self.process = subprocess.Popen(self.start_cmd,
                                         env=self.env,
                                         stdout=subprocess.PIPE)
@@ -323,7 +327,17 @@ def start(self):
     def stop(self):
         if self.process:
             self.process.terminate()
-            self.process.communicate(timeout=10)
+            try:
+                self.process.communicate(timeout=10)
+            except subprocess.TimeoutExpired:
+                # On GHA/Windows, it always runs into a timeout, even after 45 seconds.
+                #
+                # The child process is not killed if the timeout expires, so in order
+                # to cleanup properly a well-behaved application should kill the child
+                # process and finish communication.
+                # https://docs.python.org/3/library/subprocess.html#subprocess.Popen.communicate
+                self.process.kill()
+                # self.process.communicate()
             self.process.stdout.close()
             self.process = None
         self.conn_pool.clear()
@@ -348,7 +362,7 @@ def _wait_for(self, validator):
                 self.stop()
                 raise e
 
-            if wait_time > 30:
+            if wait_time > 45:
                 for line in line_buf.lines:
                     log.error(line)
                 self.stop()
diff --git a/src/crate/testing/tests.py b/src/crate/testing/tests.py
index 9c9c3017..1bc39b8a 100644
--- a/src/crate/testing/tests.py
+++ b/src/crate/testing/tests.py
@@ -28,11 +28,12 @@
 
 
 def docs_path(*parts):
-    return os.path.abspath(
+    path = os.path.abspath(
         os.path.join(
             os.path.dirname(os.path.dirname(__file__)), *parts
         )
     )
+    return path
 
 
 def project_root(*parts):
diff --git a/versions.cfg b/versions.cfg
index 2a91d62b..cec6cb50 100644
--- a/versions.cfg
+++ b/versions.cfg
@@ -20,6 +20,9 @@ py = 1.10.0
 tox = 3.23.0
 twine = 3.4.0
 pkginfo = 1.7.0
+virtualenv = 15.1.0
+wheel = 0.24.0
+zc.buildout = 2.13.7
 zc.customdoctests = 1.0.1
 zc.recipe.egg = 2.0.7
 zc.recipe.testrunner = 2.2