In Unified CM EMCC, Login is unavailable(1) is a parsing error where EMService cannot parse the XML request, often because of a version mismatch between clusters.

Checked 2026-10-02

Vendor
Cisco
Product
Cisco Unified Communications Manager
Subsystem
Extension Mobility Cross Cluster
Deployment
on-premises
Region
not restricted
Release range
12.x through 15 and SUs
Checked
2026-10-02

Sources

Cite this note

APA

WarmTransfer. (2026, October 2). Troubleshooting Extension Mobility login failures in Unified CM: source note cucm-extension-mobility-troubleshooting-emcc-err-1-parse. WarmTransfer. https://warmtransfer.net/knowledge/claims/cucm-extension-mobility-troubleshooting-emcc-err-1-parse

BibTeX

@misc{warmtransfer-claim-cucm-extension-mobility-troubleshooting-emcc-err-1-parse,
  title  = {Troubleshooting Extension Mobility login failures in Unified CM: source note cucm-extension-mobility-troubleshooting-emcc-err-1-parse},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/claims/cucm-extension-mobility-troubleshooting-emcc-err-1-parse},
  note   = {Source note cucm-extension-mobility-troubleshooting-emcc-err-1-parse, checked 2026-10-02}
}

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