diff --git a/cuda_pathfinder/cuda/pathfinder/_dynamic_libs/load_dl_linux.py b/cuda_pathfinder/cuda/pathfinder/_dynamic_libs/load_dl_linux.py
index 4bce75d109c..10a92c20830 100644
--- a/cuda_pathfinder/cuda/pathfinder/_dynamic_libs/load_dl_linux.py
+++ b/cuda_pathfinder/cuda/pathfinder/_dynamic_libs/load_dl_linux.py
@@ -164,8 +164,6 @@ def load_with_system_search(desc: LibDescriptor) -> LoadedDL | None:
     Returns:
         A LoadedDL object if successful, None if the library cannot be loaded
 
-    Raises:
-        RuntimeError: If the library is loaded but no expected symbol is found
     """
     for soname in _candidate_sonames(desc):
         try:
@@ -174,8 +172,7 @@ def load_with_system_search(desc: LibDescriptor) -> LoadedDL | None:
             pass
         else:
             abs_path = abs_path_for_dynamic_library(desc.name, handle)
-            if abs_path is None:
-                raise RuntimeError(f"No expected symbol for libname={desc.name!r}")
+            assert abs_path
             return LoadedDL(abs_path, False, handle._handle, "system-search")
     return None
 
diff --git a/cuda_pathfinder/cuda/pathfinder/_dynamic_libs/load_dl_windows.py b/cuda_pathfinder/cuda/pathfinder/_dynamic_libs/load_dl_windows.py
index a296813aa29..5069a624790 100644
--- a/cuda_pathfinder/cuda/pathfinder/_dynamic_libs/load_dl_windows.py
+++ b/cuda_pathfinder/cuda/pathfinder/_dynamic_libs/load_dl_windows.py
@@ -69,11 +69,10 @@ def add_dll_directory(dll_abs_path: str) -> None:
     dirpath = os.path.dirname(dll_abs_path)
     assert os.path.isdir(dirpath), dll_abs_path
 
-    # Add the DLL directory to the search path
-    result = kernel32.AddDllDirectory(dirpath)
-    if not result:
-        # Fallback: just update PATH if AddDllDirectory fails
-        pass
+    # Add the DLL directory to the native search path. AddDllDirectory only
+    # affects the LOAD_LIBRARY_SEARCH_USER_DIRS search; PATH is updated
+    # unconditionally below to also cover legacy dependent-DLL resolution.
+    kernel32.AddDllDirectory(dirpath)
 
     # Update PATH as a fallback for dependent DLL resolution
     curr_path = os.environ.get("PATH")