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Compatibility Security
Created on 22 Sep 2025
Upgrade issues

[KB1254] Compatibility break

The discovery of vulnerabilites in the PcVue client/server networking feature resulted in major fixes (see the security bulletin SB2025-4).These fixes include the addition of security features to ensure the confidentiality […]

Created on 22 September 2025
1466
Networking
Created on 3 Nov 2025
Known issues

[KB1258] Client/Server networking instability if recent hardening is enabled

If the security fix described in security bulletin SB2025-4 is enabled, networking packets can be falsely detected as malformed, causing a server station to force a disconnection. This issue leads […]

Created on 3 November 2025
1278
BACnet
Created on 3 Nov 2025
Known issues

[KB1257] Failure to re-subscribe BACnet COV

Since 16.3.0, BACnet COV re-subscriptions are not handled correctly, leading to a situation where BACnet variables are no longer monitored nor refreshed. Because the issue is related to re-subscription, it […]

Created on 3 November 2025
1265
Application Architect Xml Generic Import
Created on 3 Nov 2025
Known issues

[KB1256] Dead lock with the Xml Generic Import

Since 16.3.0, a dead lock can occur when importing variables other than ‘Internal’. The issue manifests itself with a freeze during Application Architect generation or synchronization, while using a Smart […]

Created on 3 November 2025
1275
Sql variables UDC
Created on 21 Oct 2025
Data acquisition

[KB1255] Repeat Query for Sql variables

We have a query execution defined to be repeated every 10 seconds and with a maximum received row count equal to 100: Then in the query itself, we add conditions […]

Created on 21 October 2025
1355