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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. Have your Microsoft 365 apps suddenly started crashing after a recent Windows or Office update? Many users experience random application freezes, launch errors, and constant crashes after installing new patches or cumulative updates.
⃣ Reset Browser Cookies & Cache
If your admin enabled Modern Authentication (MFA), try disabling it temporarily via Azure Active Directory → Properties. Alternatively, generate an app-specific password if using Outlook 2016 or older. This resets your authentication cache and forces a fresh token request.
Microsoft 365 Apps Crashing After Update — Step-by-Step Repair Guide
- With Microsoft 365, you can designate several types of administrators who serve different functions.
- Many users have both personal Microsoft accounts (e.g., Outlook.com) and work/school Office 365 accounts.
- If your country/region isn’t listed, select a neighboring country/region or dial the United States support phone number.
- This process replaces damaged core files without removing your data or customizations.
- This ensures that the system-wide search index service is active and linked to Office 365 apps.
- Partial updates often break compatibility between Windows libraries and Office binaries.
- Then, navigate to File → Options → Add-ins, and disable all non-Microsoft add-ins.
- Microsoft 365 Basic now comes with 100GB of cloud storage, secure photo and file storage, secure ad-free email, and technical support.
For iPhone users, reinstalling Outlook or updating to the latest iOS often resolves stuck sign-in loops instantly. Many users have both personal Microsoft accounts (e.g., repair corrupted OST in Outlook Outlook.com) and work/school Office 365 accounts. If both are signed in simultaneously, the system can confuse the authentication path.
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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 fix Outlook after Windows update issues by 21Vianet portal to submit service requests online and access support telephone numbers.
Step 2 – Update Outlook and Office 365
This ensures that the system-wide search index service is active and linked to Office 365 apps. Then, navigate to File → Options → Add-ins, and disable all non-Microsoft add-ins. 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 solve Office 365 mailbox sync delays Microsoft to access Microsoft support. The steps to access the repair tool vary depending on your operating system.
Repair Outlook OST File Not Working in Office 365 – Complete Fix (
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 login issues are still persisting, our experts can assist you live via WhatsApp. We’ll walk you through step-by-step solutions for Office, Outlook, or Teams sign-in errors.