Microsoft lists SlimCore Host/Framework registration mismatch and the shared-kiosk multi-user registration issue as causes of Teams VDI error 16389 that are fixed in plugin version 2026.29.1.4.
Checked 2026-10-02
- Vendor
- Microsoft
- Product
- Microsoft Teams
- Subsystem
- VDI 2.0 endpoint plugin
- Deployment
- vdi
- Region
- not restricted
- Release range
- plugins earlier than 2026.29.1.4 affected
- Checked
- 2026-10-02
Sources
- Troubleshooting the VDI 2.0 solution for Teams — Microsoft · tier 2 current vendor documentation · Section 'Error 16389', cause table rows 'SlimCore Host/FWK registration mismatch' and 'Shared kiosk multi-user registration issue'
Cite this note
APA
WarmTransfer. (2026, October 2). Troubleshooting softphones in Citrix and VMware virtual desktops: source note vdi-softphone-troubleshooting-teams-plugin-fix-2026-29. WarmTransfer. https://warmtransfer.net/knowledge/claims/vdi-softphone-troubleshooting-teams-plugin-fix-2026-29
BibTeX
@misc{warmtransfer-claim-vdi-softphone-troubleshooting-teams-plugin-fix-2026-29,
title = {Troubleshooting softphones in Citrix and VMware virtual desktops: source note vdi-softphone-troubleshooting-teams-plugin-fix-2026-29},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/vdi-softphone-troubleshooting-teams-plugin-fix-2026-29},
note = {Source note vdi-softphone-troubleshooting-teams-plugin-fix-2026-29, checked 2026-10-02}
}