Here are a few suggestions you can try:
- Update SQL Server to the latest version.
https://www.microsoft.com/en-us/download/details.aspx?id=105013
- Update SSMS to the latest version.
- Ensure that there are no log files from other instances in the audit folder.
- Additionally, you can use sys.fn_get_audit_file to view the audit logs.
Best Regards,
Mikey Qiao
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