diff --git a/test/csot/command-execution.json b/test/csot/command-execution.json
index 10f87d43a..f0858791e 100644
--- a/test/csot/command-execution.json
+++ b/test/csot/command-execution.json
@@ -52,7 +52,7 @@
                 ],
                 "appName": "reduceMaxTimeMSTest",
                 "blockConnection": true,
-                "blockTimeMS": 50
+                "blockTimeMS": 75
               }
             }
           }
diff --git a/test/unified_format.py b/test/unified_format.py
index 5afc74685..18130290b 100644
--- a/test/unified_format.py
+++ b/test/unified_format.py
@@ -947,6 +947,8 @@ class UnifiedSpecTestMixinV1(IntegrationTest):
         class_name = self.__class__.__name__.lower()
         description = spec["description"].lower()
         if "csot" in class_name:
+            if "gridfs" in class_name and sys.platform == "win32":
+                self.skipTest("PYTHON-3522 CSOT GridFS tests are flaky on Windows")
             if client_context.storage_engine == "mmapv1":
                 self.skipTest(
                     "MMAPv1 does not support retryable writes which is required for CSOT tests"