For businesses, Microsoft offers 24/7 help via tickets or phone calls. These teams assist with login problems, setup, error troubleshooting, and even custom training. Enterprise support includes more than technical help—it also covers permissions, backups, and usage logs. Moreover, for persistent issues, make sure to check for update

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.

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 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.


Latency, as seen in a Netmon trace, those extra milliseconds can add up, if there are enough of them in any given session. Historically, most perimeter networks are configured for transient connections, meaning idle connections microsoft 365 troubleshooting are generally terminated. Idle TCP sessions can be terminated by proxies and firewalls at greater than 100 to 300 seconds. This is problematic for Outlook Online because it creates and uses long-term connections, whether they're idle or not. This screenshot is from the Professional version of HTTPWatch. You can open traces taken in the Basic Version on a computer with a Professional version and read it ther


When the exact reason for the error is not known you have to try multiple methods to fix the error. Here, we present you with distinct methods that can help to fix the error. Each method is provided with the executable step


If you are also facing a problem loading your Outlook profile, then you must read this blog and get rid of the Outlook stuck loading profile issue. Dealing with Outlook stuck on loading Profile can be frustrating, but there are various troubleshooting steps you can take to resolve the issue. Start with the simpler solutions and gradually move to more advanced ones if necessary. Remember to back up your data before making any major changes to avoid data loss. In this blog, we have discussed different ways how you can fix if your Microsoft Outlook stuck on loading profil


If traffic shaping is configured, make sure the internet speed for clients is enough to work in Office 365. Network congestion reduces Office 365 performance, and traffic inspection software on routers also negatively impacts performance. DNS works fastest when name resolution is done as close to the user location as possible. If you're in Europe, you want to go to a Microsoft DNS in Europe, and (ideally) deal with a datacenter in Europe. Performance from a client in Europe going to DNS and a datacenter in America will be slowe


Find solutions to common problems or get help from a support agent. For Office apps specific issues, please click on the links below to find workarounds or fixes. After you run any troubleshooter, Get Help provides details on any findings and suggestions for possible remedies. If one of these resolves your problem, close the app and continue working. Use the Microsoft 365 network connectivity test to measure connectivity between your device and the internet, and from there to Microsoft’s network. Use the Microsoft 365 sign-in troubleshooter to help resolve sign-in issues encountered with Microsoft 36


If you want to see the frames where you're authenticating requests in your trace, add the 'NTLMSSP Summary' column to Netmon and filter for .property.NTLMSSPSummary. To see how long the authentication is taking, add the Time Delta column. If you’re having trouble signing in or syncing files, it's possible that incorrect credentials or a weak internet connection may be the cause. If it works there but not locally, then restart your device. The quality and speed of support often depend on your subscriptio


Admins can assign or remove licenses, manage renewals, and set user permissions from one dashboard. To comply with the Transparency in Coverage Rule, click here to view our health plan's microsoft 365 troubleshooting machine-readable files containing negotiated rates and historical payments. Discover how IT leaders can address key Microsoft Copilot questions on cost, deployment, security, and integration to maximize ROI and adoption. Boost your SMB’s security and compliance with Microsoft 365 Business Premium. Discover Defender and Purview add-ons for enterprise-grade protection at SMB-friendly pricing. A vast community of Microsoft Office365 users that are working together to support the product and other