Source note · Unified CM release trains and lifecycle dates
CSCwv44220, added to the 15SU4a ReadMe on July 29, 2026, is an open caveat in which Release 15 install or upgrade hangs on servers with various AMD EPYC CPUs. It affects 15SU4 and 15SU4a.
Checked 2026-10-14
- Vendor
- Cisco
- Product
- Cisco Unified Communications Manager
- Subsystem
- upgrade-path
- Deployment
- on-premises
- Region
- not restricted
- Release range
- 15SU4 and 15SU4a
- Checked
- 2026-10-14
Sources
- ReadMe for Cisco Unified Communications Manager Release 15SU4a — Cisco Systems · tier 2 current vendor documentation · Revision History (July 29, 2026); Open Caveats, CSCwv44220
Cite this note
APA
WarmTransfer. (2026, October 14). Unified CM release trains and lifecycle dates: source note cucm-versions-lifecycle-cscwv44220-amd-epyc-hang. WarmTransfer. https://warmtransfer.net/knowledge/claims/cucm-versions-lifecycle-cscwv44220-amd-epyc-hang
BibTeX
@misc{warmtransfer-claim-cucm-versions-lifecycle-cscwv44220-amd-epyc-hang,
title = {Unified CM release trains and lifecycle dates: source note cucm-versions-lifecycle-cscwv44220-amd-epyc-hang},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/cucm-versions-lifecycle-cscwv44220-amd-epyc-hang},
note = {Source note cucm-versions-lifecycle-cscwv44220-amd-epyc-hang, checked 2026-10-14}
}