# Sync warning: Unable to send updates to client

**URL:** <https://forum.inductiveautomation.com/t/sync-warning-unable-to-send-updates-to-client/54461>\
**Category:** Ignition\
**Tags:** ignition80, perspective\
**Created:** [December 27, 2021, 5:14pm UTC](https://forum.inductiveautomation.com/t/sync-warning-unable-to-send-updates-to-client/54461 "2021-12-27T17:14:02Z")\
**Posts on this page:** 1\
**Showing post:** 36

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**Author:** ![avaughn](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/avaughn/32/38972_2.png) [@avaughn](https://forum.inductiveautomation.com/u/avaughn)\
**Post date:** [February 3, 2026, 5:39pm UTC](https://forum.inductiveautomation.com/t/sync-warning-unable-to-send-updates-to-client/54461/36 "2026-02-03T17:39:37Z")

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There is a fix in both 8.1.51 and 8.3.0 that addresses this.

 ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/2/1/21a4e1c8be8ab53df784d68ac9412f0dba2ecee9.png)

> [@Nightly 8.1 Changelogs - 2025](https://forum.inductiveautomation.com/t/nightly-8-1-changelogs-2025/100308/116):
>
> Nightly Changelog: 8.1.51-SNAPSHOT-b20251126 Comms Drivers IGN-14359: Editing BACnet devices can cause the DeviceManager to get locked up indefinitely Fixes an issue where BACnet devices do not shut down properly, causing the OPC UA Device Manager to hang. OPC IGN-14743: NullPointerException in TransportProfile.fromUri() when OPC UA server returns null transport profile URI Fixes an issue where Ignition's OPC UA client can't connect to OPC UA servers that do not properly specify the transpo…

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