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Need to speak to someone right away? Admins, have your account details ready when you call Support.

Important

You must be an admin for a business subscription to use these support methods. If you're not a business admin, please use this support page.

Save time by starting your service request online. We'll help you find a solution or connect you to technical support.

Important

You must have bought at least one subscription through Microsoft to access Microsoft support. If you bought all your subscriptions through a partner, contact your partner for support.

1.Go to the admin center at https://admin.microsoft.com. If you get a message that says you don't have permission to access this page or perform this action, you aren't an admin. For more information, see Who has admin permissions in my business?.

2.On the bottom right side of the page, select Help & support.

3.Type a question or keyword into the text box. If you get a drop-down list, select the one closest to your question, or continue typing your question, then press Enter.

In most countries or regions, billing support for Microsoft 365 for business products and services is provided in English from 9 AM-5 PM, Monday through Friday. Local language support varies by country or region.

Technical support is provided in English 24 hours a day, 7 days a week, and in some cases, in local languages as noted.

Find support phone numbers by country or region

Admins, have your account details ready when you call.

Get the most out of your subscription with expert advice from small business specialists.

Business Assist for Microsoft 365 is designed for small businesses to give you and your employees around-the-clock access to small business specialists as you grow your business, from onboarding to everyday use. To learn more, see Business Assist.

With every subscription of Office 365 operated by 21Vianet, 21Vianet support provides technical, pre-sales, billing and subscription support. Support is available both online through the Office 365 operated by 21Vianet portal, and by telephone for both paid and trial subscriptions.

Authorized administrators can use the Office 365 operated by 21Vianet portal to submit service requests online and access support telephone numbers. For instructions, see Contact support.

Self-service support is available for all Office 365 operated by 21Vianet users, and includes troubleshooting tools and videos, help articles and videos, as well as forums and wikis in the Office 365 community. For more self-help resources, see Learn about Office 365 operated by 21Vianet.

Pre-sales support for Office 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. In addition, pre-sales support can help you find a Partner, and purchase and sign up for a trial. You can call during local bu...

Assistance for billing and subscription management issues is available online 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 Office 365 operated by 21Vianet portal. For instructions, see Contact support.

Here are some examples of billing and subscription management issues:

•Signing up for a trial or purchasing a subscription

•Converting from a trial subscription to a paid subscription

•Understanding the bill

•Renewing a subscription

Technical support for Office 365 operated by 21Vianet subscriptions provides assistance with basic installation, setup, and general technical usage. Some examples of these issues are listed in the following table.

Support category\tExamples

21Vianet assigns a severity level to a case when it is opened, based on an assessment of the issue type and customer impact. Examples of issue types and severity levels are shown in the following table.

Severity level\tOperations and support description\tExamples