Set your coexistence and upgrade settings

Publisher

Microsoft

URL

https://learn.microsoft.com/en-us/microsoftteams/setting-your-coexistence-and-upgrade-settings

Published

2026-02-04

Updated

unknown

Accessed

2026-09-21

HTTP status

200

License

Microsoft Learn terms of use; no-redistribution; short excerpts and locators only

Source notes citing this source

• Teams 'coexistence modes' (Islands, Skype for Business only, the two Skype for Business with Teams modes, and Teams only) describe coexistence between Skype for Business and Teams, not with a third-party PBX; modes other than Teams Only can be applied only to users homed in Skype for Business Server on-premises. in context
• Per-user coexistence modes other than Teams Only can be applied only to users homed in Skype for Business Server on-premises, and only cloud-homed users can have TeamsOnly mode. in context
• The coexistence modes an administrator can set are Islands, Skype for Business only, Skype for Business with Teams collaboration, Skype for Business with Teams collaboration and meetings, and Teams only, and only users homed in the cloud can be given TeamsOnly mode while the other modes apply only to users homed in Skype for Business Server on-premises. in context
• TeamsOnly mode can be assigned to an entire tenant only after all on-premises users have been moved to Teams Only with Move-CsUser in the Skype for Business Server toolset and any Skype for Business DNS records have been repointed to Microsoft 365. in context

Cite this source record

APA

WarmTransfer. (2026, February 4). Set your coexistence and upgrade settings. WarmTransfer. https://warmtransfer.net/knowledge/sources/ms-learn-coexistence-upgrade-settings

BibTeX

@misc{warmtransfer-ms-learn-coexistence-upgrade-settings,
  title  = {Set your coexistence and upgrade settings},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/sources/ms-learn-coexistence-upgrade-settings},
  note   = {Microsoft, accessed 2026-09-21}
}