--- a/src/bin/pg_ctl/pg_ctl.c
+++ b/src/bin/pg_ctl/pg_ctl.c
@@ -1995,11 +1995,14 @@ pgwin32_find_postmaster_pid(pid_t shell_pid)
 	 *
 	 * Check for duplicate processes to ensure reliability.
 	 *
- 	 * The launcher shell might start other cmd.exe instances or programs
-	 * besides postgres.exe. Verifying the program file name is essential.
-	 *
-	 * The launcher shell process isn't checked in this function.  It will be
-	 * checked by the caller.
+	 * The ppe entry to be examined is identified by th32ParentProcessID, which
+	 * should correspond to the cmd.exe process that executes the postgres.exe
+	 * binary. Additionally, th32ProcessID in the same entry should be the PID
+	 * of the launched postgres.exe. However, even though we have launched the
+	 * parent cmd.exe with the /D option specified, it is sometimes observed
+	 * that another cmd.exe is launched for unknown reasons. Therefore, it is
+	 * crucial to verify the program file name to avoid returning the wrong
+	 * PID.
 	 */