# 8.50 Maintenance Release 2 Enhancements or bugs resolved in this version are as follows. Important Notes: Command Centre version numbers comprise a major build version and a minor build version, (e.g., for version vEL8.50.1835, 8.50 is the major build and 1835 is the minor build). Server and workstation major builds must always match, however the minor build on the workstation can be equal to or lower than the server minor build. This feature is intended to ease the effort required for upgrades by allowing a server only maintenance upgrade. Some maintenance fixes are workstation based and may require a workstation upgrade to resolve an issue. Sites that are using ClickOnce installation of Command Centre and Configuration Client will automatically upgrade the clients. Example: For this Maintenance Release, sites that are already running Full Release version of v8.50 Command Centre Server, can choose to leave their MSI workstations running Full Release version vEL8.50.1414 if they are not affected by the bugs fixed in “Workstation”. Please refer to the “Fixed In” column in the below table for full details. Bug fixes in this version are as follows. | Category | Fixed In | Description | Tech Ref | | -------------------- | ----------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------- | -------- | | Avigilon | Workstation | Avigilon VMS integration information added to the Configuration Client config file | 90530 | | CC Backup | Server | Backup fails due to incorrect permission | 88541 | | Command Centre | Server | Controller status is not getting updated when IP or MAC changed | 86051 | | Command Centre | Server | Controllers initialise connection when its unconfigured | 90078 | | Command Centre | Server | Update ASP.Net Core library to 2.1.28 | 88005 | | Configuration Client | Server | Exception caused by a lock in Configuration Client while editing items | 90158 | | Controller | Server | Controller Service crashing due to config dispatcher locks | 88416 | | Controller | Server | Improvements to Controller Service to generate transaction timeouts to cover cases where Controllers requiring Controller Service restart to report online | 90289 | | DHCP | Controller | Controller log improvements | 89031 | | | | | 89925 | | Elevator | Controller | Kone lift goes offline when frequent valid packets cause HLIs to not send a heartbeat | 89668 | | Encoding | Workstation | Card encoding is failing due to missing Morpho files | 90828 | | Morpho | Server | Changing facility code of the Morpho Biometric type does not update card records on Controller | 88917 | | Morpho | Server | Exception due to Morpho reader invalid database | 87708 | | Morpho | Server | Morpho Biometric records are not sent down to Controller as part of ‘Resync databases’ | 88917 | | Morpho | Server | Morpho reader not auto-synchronising when authentication mode is changed | 89478 | | Morpho | Server | Morpho wave parameter no longer supported in 2.6.2 firmware | 90124 | | Multi-Server | Server | Multi-Server enhancements | 89305 | | | 89308 | | | | 89370 | | | | | 89375 | | | | | 89623 | | | | | Override | Server | Output status stuck at overridden when override finishes while controller is offline | 89501 | | Printing | Workstation | The Configuration client crashed when generating report due to print spooler issue | 89147 | | RESTAPI | Server | REST Logging Improvements | 90393 | | T20 | Controller | T20 HBUS display language in French now supports Alarm screens | 88566 | | Tagboard | Server | Exception caused by a lock in Mobile Tagboard Monitor service | 89344 | | Upgrade | Server | Upgrade failed due to constraint in authorised column in Cardholder table | 90097 | | VM Client | Server | VM Mobile credentials not sending when using SMTP with SSL enabled | 89736 | | VM Client | Workstation | ‘Cannot send an invitation email to a visitor visa Outlook’ populated from VM Client | 89403 | | VM Client | Workstation | Implement version softening for VM Client | 89845 | --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://help.security.gallagher.com/command-centre/command-centre-releases/release-history/unsupported-gallagher-command-centre-versions/command-centre-8.50-releases/8.50-maintenance-release-2.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.