diff --git a/CHANGELOG.md b/CHANGELOG.md
index f9e2a473..23f73485 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,7 @@
 * Add: option [auth] type oauth2 by code migration from https://gitlab.mim-libre.fr/alphabet/radicale_oauth/-/blob/dev/oauth2/
 * Fix: catch OS errors on PUT MKCOL MKCALENDAR MOVE PROPPATCH (insufficient storage, access denied, internal server error)
 * Test: skip bcrypt related tests if module is missing
+* Improve: relax mtime check on storage filesystem
 
 ## 3.4.1
 * Add: option [auth] dovecot_connection_type / dovecot_host / dovecot_port
diff --git a/radicale/storage/multifilesystem/__init__.py b/radicale/storage/multifilesystem/__init__.py
index 3bf9202f..1a933d14 100644
--- a/radicale/storage/multifilesystem/__init__.py
+++ b/radicale/storage/multifilesystem/__init__.py
@@ -2,7 +2,7 @@
 # Copyright © 2014 Jean-Marc Martins
 # Copyright © 2012-2017 Guillaume Ayoub
 # Copyright © 2017-2021 Unrud <unrud@outlook.com>
-# Copyright © 2024-2024 Peter Bieringer <pb@bieringer.de>
+# Copyright © 2024-2025 Peter Bieringer <pb@bieringer.de>
 #
 # This library is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
@@ -95,15 +95,21 @@ class Storage(
     def _analyse_mtime(self):
         # calculate and display mtime resolution
         path = os.path.join(self._filesystem_folder, ".Radicale.mtime_test")
+        logger.debug("Storage item mtime resolution test with file: %r", path)
         try:
             with open(path, "w") as f:
                 f.write("mtime_test")
                 f.close
         except Exception as e:
-            logger.error("Storage item mtime resolution test not possible, cannot write file: %r (%s)", path, e)
+            logger.warning("Storage item mtime resolution test not possible, cannot write file: %r (%s)", path, e)
             raise
         # set mtime_ns for tests
-        os.utime(path, times=None, ns=(MTIME_NS_TEST, MTIME_NS_TEST))
+        try:
+            os.utime(path, times=None, ns=(MTIME_NS_TEST, MTIME_NS_TEST))
+        except Exception as e:
+            logger.warning("Storage item mtime resolution test not possible, cannot set utime on file: %r (%s)", path, e)
+            os.remove(path)
+            raise
         logger.debug("Storage item mtime resoultion test set: %d" % MTIME_NS_TEST)
         mtime_ns = os.stat(path).st_mtime_ns
         logger.debug("Storage item mtime resoultion test get: %d" % mtime_ns)
@@ -147,17 +153,20 @@ def __init__(self, configuration: config.Configuration) -> None:
         logger.info("Storage cache subfolder usage for 'history': %s", self._use_cache_subfolder_for_history)
         logger.info("Storage cache subfolder usage for 'sync-token': %s", self._use_cache_subfolder_for_synctoken)
         logger.info("Storage cache use mtime and size for 'item': %s", self._use_mtime_and_size_for_item_cache)
-        (precision, precision_unit, unit) = self._analyse_mtime()
-        if precision >= 100000000:
-            # >= 100 ms
-            logger.warning("Storage item mtime resolution test result: %d %s (VERY RISKY ON PRODUCTION SYSTEMS)" % (precision_unit, unit))
-        elif precision >= 10000000:
-            # >= 10 ms
-            logger.warning("Storage item mtime resolution test result: %d %s (RISKY ON PRODUCTION SYSTEMS)" % (precision_unit, unit))
-        else:
-            logger.info("Storage item mtime resolution test result: %d %s" % (precision_unit, unit))
-            if self._use_mtime_and_size_for_item_cache is False:
-                logger.info("Storage cache using mtime and size for 'item' may be an option in case of performance issues")
+        try:
+            (precision, precision_unit, unit) = self._analyse_mtime()
+            if precision >= 100000000:
+                # >= 100 ms
+                logger.warning("Storage item mtime resolution test result: %d %s (VERY RISKY ON PRODUCTION SYSTEMS)" % (precision_unit, unit))
+            elif precision >= 10000000:
+                # >= 10 ms
+                logger.warning("Storage item mtime resolution test result: %d %s (RISKY ON PRODUCTION SYSTEMS)" % (precision_unit, unit))
+            else:
+                logger.info("Storage item mtime resolution test result: %d %s" % (precision_unit, unit))
+                if self._use_mtime_and_size_for_item_cache is False:
+                    logger.info("Storage cache using mtime and size for 'item' may be an option in case of performance issues")
+        except Exception:
+            logger.warning("Storage item mtime resolution test result not successful")
         logger.debug("Storage cache action logging: %s", self._debug_cache_actions)
         if self._use_cache_subfolder_for_item is True or self._use_cache_subfolder_for_history is True or self._use_cache_subfolder_for_synctoken is True:
             logger.info("Storage cache subfolder: %r", self._get_collection_cache_folder())