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[Server] Improve Server Application Certificate Update process

enhancementAPI or feature enhancementAPI or feature enhancement

Status: Open.

#3562 In OPCFoundation/UA-.NETStandard;

· romanett opened on Feb 17, 2026

Make implicit conversion operators explicit for NodeId/ExpandedNodeId

enhancementAPI or feature enhancementAPI or feature enhancement

Status: Open.

#3548 In OPCFoundation/UA-.NETStandard;

· marcschier opened on Feb 12, 2026

Follow up task: DataTypeNode and VariableNode Fuzztest failure

bugA bug was identified and should be fixed.A bug was identified and should be fixed.

Status: Open.

#3546 In OPCFoundation/UA-.NETStandard;

· marcschier opened on Feb 11, 2026

EncodeableFactory only loads the global root when types in Opc.Ua nuget are referenced.

bugA bug was identified and should be fixed.A bug was identified and should be fixed.

Status: Open.

#3544 In OPCFoundation/UA-.NETStandard;

· marcschier opened on Feb 11, 2026

FastDataChangeCallback intermittently stops firing after session reconnect

help wanted

needs investigation

Status: Open.

#3540 In OPCFoundation/UA-.NETStandard;

· AndriiPrystai opened on Feb 10, 2026

[CTT] Base Information -> Base Info Semantic Change --> 001.js / Server needs to raise SemanticChangeEvent

Status: Open.

#3531 In OPCFoundation/UA-.NETStandard;

· romanett opened on Feb 9, 2026

[CTT] Investigate failing Tests

Status: Open.

#3527 In OPCFoundation/UA-.NETStandard;

· romanett opened on Feb 6, 2026

[Server] Support RSA Encrypted UserNameIdentityToken with RSAEncryptedSecret format

complianceAn issue was found which is not compliant with the OPC UA specification.An issue was found which is not compliant with the OPC UA specification.

enhancementAPI or feature enhancementAPI or feature enhancement

Status: Open.

#3524 In OPCFoundation/UA-.NETStandard;

· romanett opened on Feb 5, 2026

Support Native AOT compilation of applications against stack

enhancementAPI or feature enhancementAPI or feature enhancement

Status: Open.

#3519 In OPCFoundation/UA-.NETStandard;

· marcschier opened on Feb 5, 2026

ComplexTypeSystem.LoadAsync started throwing exception in the latest UA SDK.

complexComplex TypesComplex Types

complianceAn issue was found which is not compliant with the OPC UA specification.An issue was found which is not compliant with the OPC UA specification.

Status: Open.

#3511 In OPCFoundation/UA-.NETStandard;

· romanett opened on Jan 28, 2026

·  

1.5.378 Maintenance Update

[Test] Client Test failed ExportNodesToNodeSet2_DefaultOptions

Status: Open.

#3506 In OPCFoundation/UA-.NETStandard;

· romanett opened on Jan 26, 2026

[Tests] Keep alive read failed: [80740000] 'The server returned data value of type UInt32 when a value of type Int32 was expected.

Status: Open.

#3498 In OPCFoundation/UA-.NETStandard;

· romanett opened on Jan 26, 2026