Microsoft 365 Customer Service and Support
Assistance for billing and subscription management issues is available online custom led signage or by telephone during China business hours (Beijing Time), Monday through Friday. Billing and subscription management support can be accessed using the same phone number and online service request process as with technical support. The support telephone number can be found on the Microsoft 365 operated by 21Vianet portal. 2 Severity A is only available to customers who signed an advanced online service agreement with 21Vianet through a sales account manager. For billing and subscription management support, the highest severity level is B. Presales support for Microsoft 365 operated by 21Vianet provides assistance on subscription features and benefits, plan comparisons, pricing and licensing, and helps to identify the right solution to meet your business needs.
For more self-help resources, see Microsoft 365 operated by 21Vianet.
The type of support Microsoft provides for consumers depends on the product you're calling about and if you have a product for home or for business use.
Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support.
Microsoft Create has professionally designed, fully customizable templates to help you get things done.
Technical support for Microsoft 365 operated by 21Vianet subscriptions provides assistance with basic installation, setup, and general technical usage.
Assistance for billing and subscription management issues is available online custom led signage or by telephone during China business hours (Beijing Time), Monday through Friday. Billing and subscription management support can be accessed using the same phone number and online service request process as with technical support. The support telephone number can be found on the Microsoft 365 operated by 21Vianet portal. 2 Severity A is only available to customers who signed an advanced online service agreement with 21Vianet through a sales account manager. For billing and subscription management support, the highest severity level is B. Presales support for Microsoft 365 operated by 21Vianet provides assistance on subscription features and benefits, plan comparisons, pricing and licensing, and helps to identify the right solution to meet your business needs.
For more self-help resources, see Microsoft 365 operated by 21Vianet.
The type of support Microsoft provides for consumers depends on the product you're calling about and if you have a product for home or for business use.
Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support.
Microsoft Create has professionally designed, fully customizable templates to help you get things done.
Technical support for Microsoft 365 operated by 21Vianet subscriptions provides assistance with basic installation, setup, and general technical usage.