Follow the instructions provided by the assistant to find and resolve Microsoft Office 365 problems. The Office 365 repair tool can help you fix the majority of Office 365 problems for installed Office 365 applications (not applicable if you use online apps only). You can try to repair Office by using the appropriate built-in tool. Make sure that network access to the Microsoft servers is not blocked.

Office 365 Troubleshooting Issues: Common Problems and How to Solve Them

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. In these cases, direct escalation to Microsoft or working with a Microsoft CSP partner, such as TrustedTech, can expedite resolution and minimize downtime. Our licensing engineers can help triage complex problems and ensure you're on the right support path.

Domain Verification Issues

If after running the Remote Connectivity Analyzer Office 365 issues are not fixed, try using Microsoft Support and Recovery Assistant. This tool should be installed on a computer as a standalone application. After installing and running the application and entering the Office 365 account credentials, run tests to identify the problem and find the needed solution.

• If not, the password reset page provides you with a possibility to contact your administrator.
• As the name of this tool suggests, Remote Connectivity Analyzer can identify Office 365 issues with connectivity.
• It indicates that you have reached the storage limit specified by your subscription plan.
• NAKIVO Backup & Replication is a universal data protection solution that can protect not only Office 365 but also virtual, physical, and cloud environments.
• You should ask him to provide you with credentials that will enable you to sign in.
• Service health is the online tool available for Office 365 for organizations (if you have work and school Office 365 accounts).
• If your Office 365 subscription has expired, buy a new license and extend your subscription for a new period.

Repair Outlook OST File Not Working in Office 365 – Complete Fix (

For advanced troubleshooting, FixTechGuide offers remote support to restore performance and indexing accuracy for Outlook and other Office apps. With apps syncing across devices and cloud services, sync issues are among the most frequently reported M365 problems. These can include missing files, ghost icons, or documents that do not update in real-time. Check the version of Microsoft Office installed on your computer and your subscription name and expiry date.



Microsoft offers several built-in tools to help identify and resolve persistent issues. This ensures that the system-wide search index service is active and linked to Office 365 apps. Organizations value the capabilities that the Microsoft 365 suite provides for shared access and simultaneous file editing for team members. However, sometimes employees may not have the required permissions to open and edit an item. This error appears when you send/receive error 0x800CCC0E fix attempt to upload or save a Microsoft 365 item. It indicates that you have reached the storage limit specified by your subscription plan.

Office 365 Repair Tool

Then try to activate the installed Office 365 suite again on your computer. You may need to remove old Microsoft Office licenses from your computer and install a new one. This tool is a standalone application, you can install on your computer.

The Top Backup Software Options for Safe and Secure Data Protection

If multiple versions of Microsoft Office are installed, Office 365 activation issues may occur. Uninstall old versions of Microsoft Office from your computer and try to activate Microsoft Office 365 again. Office 365 Service Health is an online tool, available for organizations, accessible only by administrators, in Office 365 Admin Center.



Microsoft Support and Recovery Assistant can help you resolve problems with Microsoft Office, Office 365, and Outlook. OneDrive issues are a separate category of problems with Microsoft 365. They can either be simple, expert Outlook tips by FixTechGuide like the OneDrive service not running or the missing OneDrive icon on the taskbar, or more complex, like OneDrive conflicting with Microsoft 365.



Check the firewall on your computer, the router, and DNS configuration. Microsoft 365 is a robust platform, but when problems arise, fast resolution is key to productivity. From sync errors to sign-in challenges and collaboration setbacks, these common Office 365 troubleshooting techniques can restore service quickly. While M365 is highly stable, it’s not immune to occasional disruptions. Microsoft recommends updating Windows, Microsoft Office and other software regularly. Microsoft Outlook OST vs PST repair updates are released on a regular basis and allow you to protect software against known threats, fix bugs, and so on.