I'm trying to run mysqld to Purge Binary Logs, but it fails with "Permission Denied"

When I run mysqld it fails as follows:- > 2025-07-31 14:47:29 0 [Warning] Can't create test file 'C:\Program > Files\MariaDB 11.4\data\AcerVero.lower-test' (Errcode: 13 "Permission > denied") C:\Program Files\MariaDB 11.4\bin\mysqld: Can't create file > 'C:\Program Files\MariaDB 11.4\data\AcerVero.err' (errno: 13 > "Permission denied") > >2025-07-31 14:47:29 0 [Note] Starting MariaDB > 11.4.5-MariaDB source revision 0771110266ff5c04216af4bf1243c65f8c67ccf4 server_uid > MhQsFfBB48q7y378l6y8KZMY7gs= as process 29644 > >2025-07-31 14:47:29 0 > [ERROR] mysqld: Can't create/write to file '.\ddl_recovery.log' > (Errcode: 13 "Permission denied") > >2025-07-31 14:47:29 0 [ERROR] > DDL_LOG: Failed to create ddl log file: .\ddl_recovery.log > >2025-07-31 14:47:29 0 [ERROR] Aborting I've tried running it from a different drive, but that made no difference. I am logged into Windows 11 as an administrator. What am I doing wrong? Thanks in advance, Steve