diff --git a/compliance_checker/protocols/zarr.py b/compliance_checker/protocols/zarr.py
index f111624c..517ce9e1 100644
--- a/compliance_checker/protocols/zarr.py
+++ b/compliance_checker/protocols/zarr.py
@@ -1,3 +1,4 @@
+import platform
 import zipfile
 from pathlib import Path
 from urllib.parse import urlparse
@@ -6,7 +7,11 @@
 
 from compliance_checker.protocols import netcdf
 
-#
+
+def _fix_windows_slashes(zarr_url):
+    if platform.system() == "Windows":
+        zarr_url = zarr_url.replace("///", "//")
+    return zarr_url
 
 
 def is_zarr(url):
@@ -55,10 +60,9 @@ def as_zarr(url):
     pr = urlparse(str(url))
 
     if "mode=nczarr" in pr.fragment:
-        if pr.netloc:
-            return str(url)  # already valid nczarr url
-        elif pr.scheme == "file":
-            return str(url)  # already valid nczarr url
+        if pr.netloc or pr.scheme == "file":
+            url = _fix_windows_slashes(url)
+        return url
 
     zarr_url = Path(
         url2pathname(pr.path),
@@ -78,4 +82,5 @@ def as_zarr(url):
     url_base = url if mode == "s3" else zarr_url.as_uri()
 
     zarr_url = f"{url_base}#mode=nczarr,{mode}"
+    zarr_url = _fix_windows_slashes(zarr_url)
     return zarr_url
diff --git a/compliance_checker/suite.py b/compliance_checker/suite.py
index 6b534f5f..6a4281e2 100644
--- a/compliance_checker/suite.py
+++ b/compliance_checker/suite.py
@@ -6,7 +6,6 @@
 import inspect
 import itertools
 import os
-import platform
 import re
 import subprocess
 import sys
@@ -893,10 +892,6 @@ def load_local_dataset(self, ds_str):
             ds_str = self.generate_dataset(ds_str)
 
         if zarr.is_zarr(ds_str):
-            if platform.system() != "Linux":
-                print(
-                    f"WARNING: {platform.system()} OS detected. NCZarr is not officially supported for your OS as of when this API was written. Your mileage may vary.",
-                )
             return Dataset(zarr.as_zarr(ds_str))
 
         if netcdf.is_netcdf(ds_str):
diff --git a/compliance_checker/tests/test_cli.py b/compliance_checker/tests/test_cli.py
index 6452eff4..b77b565d 100644
--- a/compliance_checker/tests/test_cli.py
+++ b/compliance_checker/tests/test_cli.py
@@ -20,8 +20,10 @@
 
 from .conftest import datadir, static_files
 
-if platform.system() == "Windows":
-    ncconfig = ["bash", f"{os.environ['CONDA_PREFIX']}\\Library\\bin\\nc-config"]
+on_windows = platform.system() == "Windows"
+
+if on_windows:
+    ncconfig = ["sh", f"{os.environ['CONDA_PREFIX']}\\Library\\bin\\nc-config"]
 else:
     ncconfig = ["nc-config"]
 
@@ -236,18 +238,9 @@ def _check_libnetcdf_version():
             < 8.0
         )
 
-    # TODO uncomment the third parameter once S3 support is working
-    @pytest.mark.skipif(
-        _check_libnetcdf_version(),
-        reason="NCZarr support was not available until netCDF version 4.8.0. Please upgrade to the latest libnetcdf version to test this functionality",
-    )
     @pytest.mark.skipif(
         subprocess.check_output(ncconfig + ["--has-nczarr"]) != b"yes\n",
-        reason="NCZarr is not officially supported for your OS as of when this API was written",
-    )
-    @pytest.mark.skipif(
-        subprocess.check_output(["nc-config", "--has-nczarr"]) != b"yes\n",
-        reason="NCZarr support was not built with this netCDF version",
+        reason="NCZarr is not available.",
     )
     @pytest.mark.parametrize(
         "zarr_url",
@@ -256,7 +249,12 @@ def _check_libnetcdf_version():
             str(datadir / "zip.zarr"),
             # "s3://hrrrzarr/sfc/20210408/20210408_10z_anl.zarr#mode=nczarr,s3"
         ],
-        ids=["local_file", "zip_file"],  # ,'s3_url'
+        ids=[
+            "local_file",
+            "zip_file",
+            # TODO uncomment once S3 support is working.
+            # "s3_url",
+        ],
     )
     def test_nczarr_pass_through(self, zarr_url):
         """