# Will regenerating the Ignition server and client OPC UA take down the Allen-Bradley Driver **URL:** \ **Category:** General Discussion\ **Tags:** ignition81, perspective\ **Created:** [December 12, 2024, 8:30pm UTC](https://forum.inductiveautomation.com/t/will-regenerating-the-ignition-server-and-client-opc-ua-take-down-the-allen-bradley-driver/99765 "2024-12-12T20:30:18Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![Samuel\_Terrell](https://avatars.discourse-cdn.com/v4/letter/s/51bf81/32.png) [@Samuel\_Terrell](https://forum.inductiveautomation.com/u/Samuel_Terrell)\ **Post date:** [December 12, 2024, 8:30pm UTC](https://forum.inductiveautomation.com/t/will-regenerating-the-ignition-server-and-client-opc-ua-take-down-the-allen-bradley-driver/99765/1 "2024-12-12T20:30:18Z")
I have installed the Allen-Bradley Driver module and OPC UA module. I believe all of my 20+Allen-Bradley Contrologix PLC's are communicating through the AB Driver. I am also using UaExpert to pull data to a different server. My client and server opc ua certificate expired on 11/18/2024 on Ignition server and the UaExpert stopped working. If I regenerate the server and client certificates, will it affect 1) comms to plc's 2) Ignition clients in field being able to connect back to server. ---
**Author:** ![Kevin.Herron](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kevin.herron/32/7259_2.png) [@Kevin.Herron](https://forum.inductiveautomation.com/u/Kevin.Herron)\ **Post date:** [December 12, 2024, 9:07pm UTC](https://forum.inductiveautomation.com/t/will-regenerating-the-ignition-server-and-client-opc-ua-take-down-the-allen-bradley-driver/99765/2 "2024-12-12T21:07:52Z")
I think you have to restart at least the OPC UA module if not the whole Ignition Gateway after re-generating them, so that will have some effect. Restarting the module will interrupt comms to your devices. Restarting the Gateway obviously interrupts everything.