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on December 28, 2025
Issues that originate in customer networks fall outside of the Microsoft 365 support boundaries, and in these cases, customers must work with their networking team for assistance. The administrator is expected to provide initial assistance for the customer's users. However, if the administrator is unable to resolve issues with the help of self-service support resources, they should Contact support. Technical support for Microsoft 365 operated by 21Vianet subscriptions provides assistance with basic installation, setup, and general technical usage. If you're a volume licensing admin but are unable to access the admin center, you can create an online support request. With every subscription of Microsoft 365 operated by 21Vianet, 21Vianet support provides technical, presales, billing, and subscription support.
SecureRecovery® helps restore damaged and corrupted files that can't be accessed or opened by their native apps, often outperforming manufacturer-provided repair utilities. Download our free demo version today to check the recoverability of your mailbox. Whether you have a corrupted mailbox, or constant Outlook crashes, our demo version can give you a glimpse into what SecureRecovery® can recover. Repair your corrupt files by uploading them to our cloud-based platform. After upload, processing typically takes from a few seconds to a minute, after which the user is offered free and paid options for downloading the results of the recovery. SecureRecovery® is the leading file recovery software for Outlook mailboxe
Find solutions to common problems or get help from a support agent. In a situation like that, you might need to try another solution, like a more repair PST file without data loss powerful third-party tool. Simran Bhatia is a technical content writer engaged in writing clear, concise, and SEO-optimized content. With a background in computer science and a passion for writing, I thrive to deliver complex technical content in simple layman terms. He is an expert Tech Explainer, IoT enthusiast, and a passionate nerd with over 7 years of experience in technical writin
To get started recovering your corrupted Outlook mailbox files, simply navigate to the online file repair tool and upload your file using the form at the top of the page. Remember to first backup the file to ensure you have an original copy saved. Over the next few moments, our robust tool will analyze your file and extract all usable data from it. Then, it will combine the salvaged data into a fully functional version of your mailbo
21Vianet also expect customer to collaborate at reasonable level accordingly. 21Vianet assigns a severity level to a case when it's 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. Authorized administrators can use the Microsoft 365 operated by 21Vianet portal to submit service requests online and access support telephone numbers. We can help you find a solution or connect you to technical support.
You can disable Add-Ins on launch by pressing CTRL and hitting the Microsoft repair PST file without data loss Office app shortcut. In this case, consider using safe mode, which is useful for Office 365 troubleshooting. To fix these related Office 365 issues, you can try disabling Add-Ins and then running Microsoft apps without the
21Vianet understands that receiving timely technical support from qualified professionals is a key aspect of cloud services. Equally important is the critical role that the customer's IT department plays in the support of its users. The Microsoft 365 operated by 21Vianet technical support team troubleshoots only those issues that are related to Microsoft 365 operated by 21Vianet.
Self-service support is available for all Microsoft 365 operated by 21Vianet users, and includes troubleshooting tools and videos, help articles and videos, as well as forums and wikis in the Microsoft 365 community. For more self-help resources, see Microsoft 365 operated by 21Vianet. You must be an admin for a business subscription to use these support methods. Explore learning tools to collaborate on projects together and independently, all in one place. Create equitable learning environments that help students develop knowledge with familiar apps essential to both academic and future career success.
If your country/region isn't listed, select a neighboring country/region or dial the United States support phone number. For a smoother support experience, we recommend that you open separate support requests for each issue. You must have at least one subscription bought through Microsoft to access Microsoft support.
That is why third-party programs are there for advanced repair beyond the capacity of basic fixes. The tool Microsoft uses to correct minor PST issues in Outlook is known as ScanPST.exe. It can scan, diagnose, and attempt to correct the damaged files whenever corruption occur
Check out all of our small business content on Small business help & learning. For more information about the availability of support throughout the life of your product, visit the Microsoft Lifecycle Policy. See the table below for the type of support you can get depending on your product.