diff --git a/src/fosslight_source/_scan_item.py b/src/fosslight_source/_scan_item.py
index 0d2191d..4a94ba1 100644
--- a/src/fosslight_source/_scan_item.py
+++ b/src/fosslight_source/_scan_item.py
@@ -23,7 +23,7 @@
 MAX_LICENSE_LENGTH = 200
 MAX_LICENSE_TOTAL_LENGTH = 600
 SUBSTRING_LICENSE_COMMENT = "Maximum character limit (License)"
-KB_URL = "http://fosslight-kb.lge.com/query"
+KB_URL = "http://fosslight-kb.lge.com/"
 
 
 class SourceItem(FileItem):
@@ -108,7 +108,7 @@ def _get_origin_url_from_md5_hash(self, md5_hash: str, wfp: str = "") -> str:
             payload = {"file_hash": md5_hash}
             if wfp and wfp.strip():
                 payload["wfp_base64"] = base64.b64encode(wfp.strip().encode("utf-8")).decode("ascii")
-            request = urllib.request.Request(KB_URL, data=json.dumps(payload).encode('utf-8'), method='POST')
+            request = urllib.request.Request(f"{KB_URL}query", data=json.dumps(payload).encode('utf-8'), method='POST')
             request.add_header('Accept', 'application/json')
             request.add_header('Content-Type', 'application/json')
 
diff --git a/src/fosslight_source/cli.py b/src/fosslight_source/cli.py
index 6417d40..408430b 100755
--- a/src/fosslight_source/cli.py
+++ b/src/fosslight_source/cli.py
@@ -263,15 +263,18 @@ def create_report_file(
 
 def check_kb_server_reachable() -> bool:
     try:
-        request = urllib.request.Request(KB_URL, method='HEAD')
-        with urllib.request.urlopen(request, timeout=5) as response:
+        request = urllib.request.Request(f"{KB_URL}health", method='GET')
+        with urllib.request.urlopen(request, timeout=10) as response:
             logger.debug(f"KB server is reachable. Response status: {response.status}")
             return response.status != 404
     except urllib.error.HTTPError as e:
+        logger.debug(f"KB server returned HTTP error: {e.code}")
         return e.code != 404
-    except urllib.error.URLError:
+    except urllib.error.URLError as e:
+        logger.debug(f"KB server is unreachable (timeout or connection error): {e}")
         return False
-    except Exception:
+    except Exception as e:
+        logger.debug(f"Unexpected error checking KB server: {e}")
         return False