Teams VDI error 4390 (ERROR_NOT_A_REPARSE_POINT) is a SlimCore MSIX error seen on thin clients that use Unified Write Filters and RAM-disk overlays.
Checked 2026-10-02
- Vendor
- Microsoft
- Product
- Microsoft Teams
- Subsystem
- VDI 2.0 thin clients
- 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 row 4390
Cite this note
APA
WarmTransfer. (2026, October 2). Troubleshooting softphones in Citrix and VMware virtual desktops: source note vdi-softphone-troubleshooting-teams-err-4390-uwf. WarmTransfer. https://warmtransfer.net/knowledge/claims/vdi-softphone-troubleshooting-teams-err-4390-uwf
BibTeX
@misc{warmtransfer-claim-vdi-softphone-troubleshooting-teams-err-4390-uwf,
title = {Troubleshooting softphones in Citrix and VMware virtual desktops: source note vdi-softphone-troubleshooting-teams-err-4390-uwf},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/vdi-softphone-troubleshooting-teams-err-4390-uwf},
note = {Source note vdi-softphone-troubleshooting-teams-err-4390-uwf, checked 2026-10-02}
}