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Unable to assign extension number to a user
8x8 Support

Unable to assign extension number to a user


Unable to assign a particular extension number to a user from Configuration Manager

An error is shown "User settings saved with errors. Failed at extension update." or an error indicating that the extension already exists

Other extension numbers (such as the suggested extension) can be assigned to the user

Applies To

Virtual Office Configuration Manager 


Use an alternative extension number


Some extension numbers are reserved for use by the system for use by services, these are not always visible in Configuration Manager.

For example 601-605 are reserved for call park virtual extensions.

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