Log flooding messages v2026.3 -> pre-upgrade write queue exceeded 8388608 bytes; dropping connection

[BarryT]

Hi,

As the title says, our Domoticz log is being flooded approximately every 2/3/4/5 minutes with messages we have never seen before.

We upgraded Domoticz to the latest stable version last week. Since that upgrade, the following messages have started appearing:

Code: Select all

2026-08-04 16:49:30.493 Status: 192.168.1.91 -> pre-upgrade write queue exceeded 8388608 bytes; dropping connection

The client IP address may vary, but the message is always the same.

What exactly does this message mean? Is this caused by a WebSocket connection, browser session, or something else?
More importantly, how can we fix the underlying problem or disable these repeated log messages?

Thanks.

[waltervl]

Is there something related to those mentioned clients connected to Domoticz? Do they run scripts outside Domoticz?

[BarryT]

Is there something related to those mentioned clients connected to Domoticz? Do they run scripts outside Domoticz?

No, there are no scripts outside Domoticz, as far as i know..
Just users who opening the Domoticz interface in their browser on laptop/pc or phones..

[eddieb]

I get these messages too, latest beta ...

Code: Select all

2026-08-05 08:02:18.983  Status: ::ffff:192.168.0.220 -> pre-upgrade write queue exceeded 8388608 bytes; dropping connection

[FunFair]

same here, since updating to stable.
Messages are appearing while the browser is already closed.

I was running the beta from 2 weeks ago without any of these messages.

[Arjan2019]

Same over here
Beta: 18195 atm

Spoiler: show

Line 37540: 2026-08-02 20:53:04.302 Status: ::ffff:192.168.1.94 -> pre-upgrade write queue exceeded 8388608 bytes; dropping connection
Line 37572: 2026-08-02 21:04:09.652 Status: ::ffff:192.168.1.94 -> pre-upgrade write queue exceeded 8388608 bytes; dropping connection
Line 37573: 2026-08-02 21:04:09.653 Status: ::ffff:192.168.1.94 -> pre-upgrade write queue exceeded 8388608 bytes; dropping connection
Line 37574: 2026-08-02 21:16:01.866 Status: ::ffff:192.168.1.94 -> pre-upgrade write queue exceeded 8388608 bytes; dropping connection
Line 37575: 2026-08-02 21:16:46.679 Status: ::ffff:192.168.1.94 -> pre-upgrade write queue exceeded 8388608 bytes; dropping connection
Line 37576: 2026-08-02 21:16:49.099 Status: ::ffff:192.168.1.94 -> pre-upgrade write queue exceeded 8388608 bytes; dropping connection
Line 37577: 2026-08-02 21:29:55.221 Status: ::ffff:192.168.1.94 -> pre-upgrade write queue exceeded 8388608 bytes; dropping connection
Line 37578: 2026-08-02 21:31:17.559 Status: ::ffff:192.168.1.94 -> pre-upgrade write queue exceeded 8388608 bytes; dropping connection
Line 37604: 2026-08-02 23:40:15.309 Status: ::ffff:192.168.1.94 -> pre-upgrade write queue exceeded 8388608 bytes; dropping connection
Line 37605: 2026-08-02 23:40:17.571 Status: ::ffff:192.168.1.94 -> pre-upgrade write queue exceeded 8388608 bytes; dropping connection
Line 37639: 2026-08-03 00:04:27.539 Status: ::ffff:192.168.1.94 -> pre-upgrade write queue exceeded 8388608 bytes; dropping connection
Line 37640: 2026-08-03 00:04:29.181 Status: ::ffff:192.168.1.94 -> pre-upgrade write queue exceeded 8388608 bytes; dropping connection
Line 37696: 2026-08-03 07:58:20.205 Status: ::ffff:192.168.1.94 -> pre-upgrade write queue exceeded 8388608 bytes; dropping connection
Line 37750: 2026-08-03 10:58:20.046 Status: ::ffff:192.168.1.94 -> pre-upgrade write queue exceeded 8388608 bytes; dropping connection
Line 37775: 2026-08-03 15:09:54.787 Status: ::ffff:192.168.1.94 -> pre-upgrade write queue exceeded 8388608 bytes; dropping connection
Line 37802: 2026-08-03 15:25:44.140 Status: ::ffff:192.168.1.94 -> pre-upgrade write queue exceeded 8388608 bytes; dropping connection
Line 37803: 2026-08-03 15:29:14.625 Status: ::ffff:192.168.1.94 -> pre-upgrade write queue exceeded 8388608 bytes; dropping connection
Line 37804: 2026-08-03 15:30:00.915 Status: ::ffff:192.168.1.94 -> pre-upgrade write queue exceeded 8388608 bytes; dropping connection
Line 37813: 2026-08-03 16:13:14.823 Status: ::ffff:192.168.1.94 -> pre-upgrade write queue exceeded 8388608 bytes; dropping connection
Line 37814: 2026-08-03 16:13:15.011 Status: ::ffff:192.168.1.94 -> pre-upgrade write queue exceeded 8388608 bytes; dropping connection
Line 37815: 2026-08-03 16:13:15.026 Status: ::ffff:192.168.1.94 -> pre-upgrade write queue exceeded 8388608 bytes; dropping connection
Line 37818: 2026-08-03 17:03:00.173 Status: ::ffff:192.168.1.94 -> pre-upgrade write queue exceeded 8388608 bytes; dropping connection
Line 38209: 2026-08-03 22:25:24.740 Status: ::ffff:192.168.1.94 -> pre-upgrade write queue exceeded 8388608 bytes; dropping connection
Line 38727: 2026-08-03 23:00:50.035 Status: ::ffff:192.168.1.94 -> pre-upgrade write queue exceeded 8388608 bytes; dropping connection
Line 38891: 2026-08-04 09:04:54.120 Status: ::ffff:192.168.1.94 -> pre-upgrade write queue exceeded 8388608 bytes; dropping connection
Line 38920: 2026-08-04 15:17:51.281 Status: ::ffff:192.168.1.94 -> pre-upgrade write queue exceeded 8388608 bytes; dropping connection
Line 38921: 2026-08-04 15:17:53.039 Status: ::ffff:192.168.1.94 -> pre-upgrade write queue exceeded 8388608 bytes; dropping connection
Line 38949: 2026-08-04 19:12:21.526 Status: ::ffff:192.168.1.94 -> pre-upgrade write queue exceeded 8388608 bytes; dropping connection
Line 39104: 2026-08-05 09:42:57.741 Status: ::ffff:192.168.1.94 -> pre-upgrade write queue exceeded 8388608 bytes; dropping connection
Line 39105: 2026-08-05 09:43:52.849 Status: ::ffff:192.168.1.94 -> pre-upgrade write queue exceeded 8388608 bytes; dropping connection
Line 39115: 2026-08-05 11:28:26.851 Status: ::ffff:192.168.1.94 -> pre-upgrade write queue exceeded 8388608 bytes; dropping connection
Line 39147: 2026-08-05 15:47:59.138 Status: ::ffff:192.168.1.94 -> pre-upgrade write queue exceeded 8388608 bytes; dropping connection
Line 39333: 2026-08-05 22:17:19.070 Status: ::ffff:192.168.1.94 -> pre-upgrade write queue exceeded 8388608 bytes; dropping connection
Line 39334: 2026-08-05 22:17:19.776 Status: ::ffff:192.168.1.94 -> pre-upgrade write queue exceeded 8388608 bytes; dropping connection
Line 39335: 2026-08-05 22:18:29.825 Status: ::ffff:192.168.1.94 -> pre-upgrade write queue exceeded 8388608 bytes; dropping connection
Line 39336: 2026-08-05 22:18:31.862 Status: ::ffff:192.168.1.94 -> pre-upgrade write queue exceeded 8388608 bytes; dropping connection
Line 39340: 2026-08-05 22:34:23.237 Status: ::ffff:192.168.1.94 -> pre-upgrade write queue exceeded 8388608 bytes; dropping connection
Line 39423: 2026-08-06 07:50:01.075 Status: ::ffff:192.168.1.94 -> pre-upgrade write queue exceeded 8388608 bytes; dropping connection
Line 39548: 2026-08-06 12:35:22.053 Status: ::ffff:192.168.1.94 -> pre-upgrade write queue exceeded 8388608 bytes; dropping connection
Line 43509: 2026-08-06 16:48:49.744 Status: ::ffff:192.168.1.94 -> pre-upgrade write queue exceeded 8388608 bytes; dropping connection
Line 43768: 2026-08-07 00:17:50.309 Status: ::ffff:192.168.1.94 -> pre-upgrade write queue exceeded 8388608 bytes; dropping connection
Line 43949: 2026-08-07 08:21:29.764 Status: ::ffff:192.168.1.94 -> pre-upgrade write queue exceeded 8388608 bytes; dropping connection

[BarryT]

After updating to v2026.3 (build 18347), these messages are still appearing. Unfortunately, I can not downgrade back to the stable version.