# Invalid configuration ![[z_img/f74506e52724f995e71b4e35e0edfffc_MD5.jpeg]] In this case it connects and pulls in doors, I/O then fails with the above error. **C:\ProgramData\Milestone\XProtect Event Server\logs\MIPLogs**\ - `MIPYYYY-MM-DD.log` MIP log shows an error like this; ``` 2025-11-20 17:15:24.009-06:00 [ 103] ERROR - ACConfiguration.ValidateConfiguration Access control configuration failed. Error: The ACUnit.ParentUnit 'SITE_54819896' was not found in the configuration. ``` This seems to be related to a Birvo Access system with many sites, one of the unrelated sites breaks our configuration download. We have a version of the plugin that bypasses this check. This should only be installed if you come up against this problem. So what you need to do is: 1. Uninstall “Brivo Access Control Module for XProtect”, only this needs updating. ![[z_img/606abd70afe3011283cc2f58ea2a20bc_MD5.jpeg]] 2. Install this version instead. [Brivo Access for XProtect Setup v1.0.5_configFix.msi](https://orbnetsyscom.sharepoint.com/:u:/s/ORBNETPublic/IQDU_Rdz-VwlQKRWJXxBcRglAUNc_VgM9aPPfxi4JfjVy2g?e=E8T9xi) > [!Note] > This is an unsigned build, so it may trigger some security warnings. These warnings are harmless – there is no actual risk.