diff --git a/changes-entries/pr64413.txt b/changes-entries/pr64413.txt
new file mode 100644
index 0000000..a11d75b
--- /dev/null
+++ b/changes-entries/pr64413.txt
@@ -0,0 +1,3 @@
+  *) mod_dav_fs: Improve logging output when failing to open files for
+     writing.  PR 64413.  [Bingyu Shen <ahshenbingyu gmail.com>]
+
diff --git a/modules/dav/fs/repos.c b/modules/dav/fs/repos.c
index 8dfa28a..1f7379a 100644
--- a/modules/dav/fs/repos.c
+++ b/modules/dav/fs/repos.c
@@ -948,15 +948,29 @@
         else if (APR_STATUS_IS_EEXIST(rv)) {
             rv = apr_file_open(&ds->f, ds->pathname, flags, APR_OS_DEFAULT,
                                ds->p);
+            if (rv != APR_SUCCESS) {
+                return dav_new_error(p, MAP_IO2HTTP(rv), 0, rv,
+                                    apr_psprintf(p, "Could not open an existing "
+                                                 "resource for writing: %s.",
+                                                 ds->pathname));
+            }
         }
     }
     else {
         rv = apr_file_open(&ds->f, ds->pathname, flags, APR_OS_DEFAULT, ds->p);
+        if (rv != APR_SUCCESS) {
+            return dav_new_error(p, MAP_IO2HTTP(rv), 0, rv,
+                                 apr_psprintf(p, "Could not open an existing "
+                                              "resource for reading: %s.",
+                                              ds->pathname));
+        }
     }
 
     if (rv != APR_SUCCESS) {
         return dav_new_error(p, MAP_IO2HTTP(rv), 0, rv,
-                             "An error occurred while opening a resource.");
+                             apr_psprintf(p, "An error occurred while opening "
+                                          "a resource for writing: %s.",
+                                          ds->pathname));
     }
 
     /* (APR registers cleanups for the fd with the pool) */