# \[IGN-2343, IGN-8727\] "Unable to send updates to clients" error in logs **URL:** \ **Category:** Ignition\ **Tags:** perspective, ignition81\ **Created:** [July 28, 2021, 5:42pm UTC](https://forum.inductiveautomation.com/t/ign-2343-ign-8727-unable-to-send-updates-to-clients-error-in-logs/49316 "2021-07-28T17:42:21Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![rbachman](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/rbachman/32/43718_2.png) [@rbachman](https://forum.inductiveautomation.com/u/rbachman)\ **Post date:** [July 28, 2021, 5:42pm UTC](https://forum.inductiveautomation.com/t/ign-2343-ign-8727-unable-to-send-updates-to-clients-error-in-logs/49316/1 "2021-07-28T17:42:22Z")
We have errors over and over again in our logs for "unable to send updates to clients." We see several errors per second. The errors indicate that it is with a Perspective session, but I _think_ that it might actually be related to editing a Perspective view in the designer. From past experience, it doesn't cause usually major issues, and it disappears as soon as we restart the Gateway. However, we just had an issue where Ignition experienced a very momentary disconnect from our SQL Server 3 straight times when I saved our Parent project, and I'm starting to wonder if there could be a connection. Other users were able to able to save the Parent project without any issues, which makes me think it was related to my client. I'm curious now if the two errors could be related in anyway. Has anyone seen this? Any ideas how to resolve it? I would like to identify the root cause and eliminate it. ![2021-07-28 12_36_58-EPWM-Ignition - Ignition Gateway - Brave](https://us1.discourse-cdn.com/inductiveautomation/original/3X/1/1/110cd9bfffb1918b276fb5f6aa50d422e1a71ec0.png) ---
**Author:** ![rbachman](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/rbachman/32/43718_2.png) [@rbachman](https://forum.inductiveautomation.com/u/rbachman)\ **Post date:** [July 28, 2021, 5:42pm UTC](https://forum.inductiveautomation.com/t/ign-2343-ign-8727-unable-to-send-updates-to-clients-error-in-logs/49316/2 "2021-07-28T17:42:50Z")
If anyone from IA replies, I had a ticket open earlier from this issue, but we closed the ticket after we restarted the gateway and the errors disappeared. [https://support.inductiveautomation.com/hc/en-us/requests/15314](https://support.inductiveautomation.com/hc/en-us/requests/15314) ---
**Author:** ![victor1](https://avatars.discourse-cdn.com/v4/letter/v/6de8d8/32.png) [@victor1](https://forum.inductiveautomation.com/u/victor1)\ **Post date:** [August 10, 2021, 5:55pm UTC](https://forum.inductiveautomation.com/t/ign-2343-ign-8727-unable-to-send-updates-to-clients-error-in-logs/49316/3 "2021-08-10T17:55:50Z")
We are facing the same problem here. As you said, after restarting the gateway, it stops, but after some time it starts again. Did you manage to solve this problem? ---
**Author:** ![cmallonee](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/cmallonee/32/6416_2.png) [@cmallonee](https://forum.inductiveautomation.com/u/cmallonee)\ **Post date:** [August 10, 2021, 6:34pm UTC](https://forum.inductiveautomation.com/t/ign-2343-ign-8727-unable-to-send-updates-to-clients-error-in-logs/49316/4 "2021-08-10T18:34:30Z")
We’re aware of the issue and the issue is in our queue for development (meaning it should be fixed sooner rather than later). The internal ticket provides no replication steps - nor does this thread - and that’s why it hasn’t been fixed previously. If anyone here can explain what caused the issue when it was first encountered it would help us immensely. We have been unable to replicate the issue internally, and so “fixing” the issue is going to troublesome. ---
**Author:** ![ggcontrols](https://avatars.discourse-cdn.com/v4/letter/g/b19c9b/32.png) [@ggcontrols](https://forum.inductiveautomation.com/u/ggcontrols)\ **Post date:** [August 30, 2021, 1:49pm UTC](https://forum.inductiveautomation.com/t/ign-2343-ign-8727-unable-to-send-updates-to-clients-error-in-logs/49316/5 "2021-08-30T13:49:38Z")
Hi, I started seeing this warning in the status/logs after I imported a project with security. I’m not sure if it has to do with the security or the project import. Hopefully this provides some direction @cmallonee ---
**Author:** ![rbachman](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/rbachman/32/43718_2.png) [@rbachman](https://forum.inductiveautomation.com/u/rbachman)\ **Post date:** [August 30, 2021, 10:40pm UTC](https://forum.inductiveautomation.com/t/ign-2343-ign-8727-unable-to-send-updates-to-clients-error-in-logs/49316/6 "2021-08-30T22:40:22Z")
I’m not completely honest how it starts, so I’m not sure how to replicate it. I _think_ that it might be related to having the designer open with Perspective views open when I lose network connection to the Gateway. But that’s purely speculation; it is possible that it is related to an actual client that is connecting to a Perspective webpage. All I know is that the error doesn’t cause any immediate issues, so we usually identify it after it has been going for a while. ---
**Author:** ![fbeck](https://avatars.discourse-cdn.com/v4/letter/f/3da27b/32.png) [@fbeck](https://forum.inductiveautomation.com/u/fbeck)\ **Post date:** [October 29, 2021, 10:11am UTC](https://forum.inductiveautomation.com/t/ign-2343-ign-8727-unable-to-send-updates-to-clients-error-in-logs/49316/7 "2021-10-29T10:11:22Z")
I had the same problem this week. I have detected that it has to do something with connecting to session over wired network and WLAN. If I change connection while I have an open session and the project is changed after the connection change thes this error appears in the log again… ---
**Author:** ![John33](https://avatars.discourse-cdn.com/v4/letter/j/b5ac83/32.png) [@John33](https://forum.inductiveautomation.com/u/John33)\ **Post date:** [March 19, 2022, 8:32pm UTC](https://forum.inductiveautomation.com/t/ign-2343-ign-8727-unable-to-send-updates-to-clients-error-in-logs/49316/8 "2022-03-19T20:32:44Z")
@cmallonee Do you know the status of this issue? I’ve been getting a lot of it lately, not sure the cause. I think it started when we added some Gateway-scoped scripting, but that’s just a guess. ---
**Author:** ![cmallonee](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/cmallonee/32/6416_2.png) [@cmallonee](https://forum.inductiveautomation.com/u/cmallonee)\ **Post date:** [March 20, 2022, 3:48pm UTC](https://forum.inductiveautomation.com/t/ign-2343-ign-8727-unable-to-send-updates-to-clients-error-in-logs/49316/9 "2022-03-20T15:48:53Z")
This has always been an issue we’ve had a problem replicating reliably. We did implement a fix for it, in that we identified where the logging/warning was occurring and put in additional handling to more properly identify what is occurring there instead of the generic and unhelpful “Unable to send updates to client” message. That fix was part of **8.1.12** , so you can take advantage of the fix in any version since then. To be clear, this warning does mean that something is wrong, and the “fix” we implemented only makes the logging more clear by actually clarifying an action which could be taken to fix the issue, or at least explaining what is causing the issue. If you’re seeing these warnings now you’ll still get warnings, but at least you can now understand what’s causing the issue or what needs to be done. ---
**Author:** ![code\_skin](https://avatars.discourse-cdn.com/v4/letter/c/43a26b/32.png) [@code\_skin](https://forum.inductiveautomation.com/u/code_skin)\ **Post date:** [March 21, 2022, 10:36am UTC](https://forum.inductiveautomation.com/t/ign-2343-ign-8727-unable-to-send-updates-to-clients-error-in-logs/49316/10 "2022-03-21T10:36:42Z")
One of our clients on 8.1.15 has this issue. The status log page is nearly unusable because of this warning (unless you apply filters every time). Gateway restarts helps, but like others in this thread mention, it comes back after 1-2 days. Here’s the log expanded, which tells me it’s something with a perspective project. ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/e/4/e4e6bc0db9712b85e585358305f547da8e59ebaf.png) Edit: Based on the warning message I checked the threads but didn’t see any blocked. ---
**Author:** ![rbachman](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/rbachman/32/43718_2.png) [@rbachman](https://forum.inductiveautomation.com/u/rbachman)\ **Post date:** [March 21, 2022, 2:45pm UTC](https://forum.inductiveautomation.com/t/ign-2343-ign-8727-unable-to-send-updates-to-clients-error-in-logs/49316/11 "2022-03-21T14:45:43Z")
I _think_ that the issue is related to Perspective views open in the Designer when the connection in the Designer is lost to the server. For example, if I have am editing a Perspective session in the Designer and get disconnected from our VPN, it appears that it may be the cause of the issue. However, it isn’t completely consistent, so I don’t know if it matters whether I have unsaved changed in the view or if it could be that the VPN connection is lost at the moment I’m trying to save. ---
**Author:** ![eessig](https://avatars.discourse-cdn.com/v4/letter/e/bb73d2/32.png) [@eessig](https://forum.inductiveautomation.com/u/eessig)\ **Post date:** [April 4, 2022, 1:54pm UTC](https://forum.inductiveautomation.com/t/ign-2343-ign-8727-unable-to-send-updates-to-clients-error-in-logs/49316/12 "2022-04-04T13:54:36Z")
We are experiencing the same error. If I use the magnifying glass icon, it sometimes references one project with a different session project, which makes no sense to me. It has flooded the logs so I cannot see when it started and make some correlation for cause. I can say that the last time I was editing projects in designer 3 days ago, I kept losing connection for some reason and then designer thought there was another person editing the views I had open upon re-connect, perhaps this is related? Designer crashed and closed on me a few times as well during this process. Also, we just upgraded to 8.1.15 last to get fixes for other problems we had. This gateway with about 10 projects is hosted on a remote server and connect over the internet without VPN to launch designer and client sessions… ---
**Author:** ![pturmel](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/pturmel/32/3295_2.png) [@pturmel](https://forum.inductiveautomation.com/u/pturmel)\ **Post date:** [April 4, 2022, 1:57pm UTC](https://forum.inductiveautomation.com/t/ign-2343-ign-8727-unable-to-send-updates-to-clients-error-in-logs/49316/13 "2022-04-04T13:57:27Z")
> [@eessig](#): > > This gateway with about 10 projects is hosted on a remote server and connect over the internet without VPN In that case, you might just be suffering from random probing attacks. Very common on my public webservers. ---
**Author:** ![eessig](https://avatars.discourse-cdn.com/v4/letter/e/bb73d2/32.png) [@eessig](https://forum.inductiveautomation.com/u/eessig)\ **Post date:** [April 4, 2022, 2:11pm UTC](https://forum.inductiveautomation.com/t/ign-2343-ign-8727-unable-to-send-updates-to-clients-error-in-logs/49316/14 "2022-04-04T14:11:27Z")
Is there a way to determine that for sure? ---
**Author:** ![pturmel](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/pturmel/32/3295_2.png) [@pturmel](https://forum.inductiveautomation.com/u/pturmel)\ **Post date:** [April 4, 2022, 2:22pm UTC](https://forum.inductiveautomation.com/t/ign-2343-ign-8727-unable-to-send-updates-to-clients-error-in-logs/49316/15 "2022-04-04T14:22:42Z")
Use a session startup script to log all of the IP addresses connecting to your server. Look for unexpected addresses attempting many connections. { There might already be a logger that will give you that information. } ---
**Author:** ![eessig](https://avatars.discourse-cdn.com/v4/letter/e/bb73d2/32.png) [@eessig](https://forum.inductiveautomation.com/u/eessig)\ **Post date:** [April 4, 2022, 2:31pm UTC](https://forum.inductiveautomation.com/t/ign-2343-ign-8727-unable-to-send-updates-to-clients-error-in-logs/49316/16 "2022-04-04T14:31:24Z")
Thanks for your help, Phil. ---
**Author:** ![jd1](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/jd1/32/18928_2.png) [@jd1](https://forum.inductiveautomation.com/u/jd1)\ **Post date:** [April 20, 2022, 4:08pm UTC](https://forum.inductiveautomation.com/t/ign-2343-ign-8727-unable-to-send-updates-to-clients-error-in-logs/49316/17 "2022-04-20T16:08:39Z")
Can you give a little more detail on how to do this? ---
**Author:** ![dkylep](https://avatars.discourse-cdn.com/v4/letter/d/6de8d8/32.png) [@dkylep](https://forum.inductiveautomation.com/u/dkylep)\ **Post date:** [June 27, 2022, 6:25pm UTC](https://forum.inductiveautomation.com/t/ign-2343-ign-8727-unable-to-send-updates-to-clients-error-in-logs/49316/18 "2022-06-27T18:25:19Z")
I'm getting the ' **sync - unable to send updates to client**' error spamming my error logs. Looks like this was addressed previously but I'm seeing the issue on 8.1.18 > [@Nightly 8.1 Changelogs - 2021](https://forum.inductiveautomation.com/t/nightly-8-1-changelogs-2021/42410/168): > > Nightly Changelog: 8.1.12-b20211012 Visualization 3286: Perspective Map Component: props.layers.ui.markers get redrawn every time another props.layers property is modified An individual marker is only redrawn when the layers.ui.marker [x].icon component property of that marker is modified. 2343: Perspective session logging error “Unable To Send Updates To Client” repeatedly Listening for WebSocket errors and trapping two error types that will render the WebSocket unrecoverable. In those c… ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/5/c/5c028e6695c8e044b993a15b4c35cd2b4bc4b166.png) ---
**Author:** ![jacob.ramirez](https://avatars.discourse-cdn.com/v4/letter/j/9dc877/32.png) [@jacob.ramirez](https://forum.inductiveautomation.com/u/jacob.ramirez)\ **Post date:** [January 27, 2023, 4:22pm UTC](https://forum.inductiveautomation.com/t/ign-2343-ign-8727-unable-to-send-updates-to-clients-error-in-logs/49316/19 "2023-01-27T16:22:23Z")
I am also receiving this error in **8.1.23**. It is flooding my logs. In the gateway logs screen, I have 537 pages that only go back 12 hours or so. ---
**Author:** ![cmallonee](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/cmallonee/32/6416_2.png) [@cmallonee](https://forum.inductiveautomation.com/u/cmallonee)\ **Post date:** [January 27, 2023, 5:12pm UTC](https://forum.inductiveautomation.com/t/ign-2343-ign-8727-unable-to-send-updates-to-clients-error-in-logs/49316/20 "2023-01-27T17:12:15Z")
Could you expand the warning and paste the accompanying stacktrace here? The "fix" for this issue was to provide better insight into why the issue was being logged in the first place. Websocket disconnects are frustratingly nebulous and can occur for a number of reasons. We originally captured any sort of failure to communicate via the websocket and logged it as "Channel is not open", which was unhelpful in diagnosing the cause. We're hoping the stacktrace could provide a better idea of why you're encountering this. [Next page](https://forum.inductiveautomation.com/t/ign-2343-ign-8727-unable-to-send-updates-to-clients-error-in-logs/49316.md?page=2)