Teams VDI error 403 (deployErrc 3227) means something on the network, typically a proxy, is blocking the SlimCore MSIX download; 404 (3235) points to a missing CDN package or proxy interference.
Checked 2026-10-02
- Vendor
- Microsoft
- Product
- Microsoft Teams
- Subsystem
- VDI 2.0 SlimCore MSIX deployment
- Deployment
- vdi
- Region
- not restricted
- Release range
- current as of 2026-10-02
- Checked
- 2026-10-02
Sources
- Troubleshooting the VDI 2.0 solution for Teams — Microsoft · tier 2 current vendor documentation · Section 'Connection error', table rows 403 / 3227 and 404 / 3235
Cite this note
APA
WarmTransfer. (2026, October 2). Troubleshooting softphones in Citrix and VMware virtual desktops: source note vdi-softphone-troubleshooting-teams-err-403-proxy. WarmTransfer. https://warmtransfer.net/knowledge/claims/vdi-softphone-troubleshooting-teams-err-403-proxy
BibTeX
@misc{warmtransfer-claim-vdi-softphone-troubleshooting-teams-err-403-proxy,
title = {Troubleshooting softphones in Citrix and VMware virtual desktops: source note vdi-softphone-troubleshooting-teams-err-403-proxy},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/vdi-softphone-troubleshooting-teams-err-403-proxy},
note = {Source note vdi-softphone-troubleshooting-teams-err-403-proxy, checked 2026-10-02}
}