To avoid data loss when using cloud applications, perform Office 365 data backup. NAKIVO Backup & Replication is a universal data protection solution that can protect not only Office 365 but also virtual, physical, and cloud environments. If the provided recommendations don’t help you resolve the issues or you want to send Office 365 complaints, call Microsoft support. Try testing the configuration of your Office 365 email system and fix the problems that are preventing users from using the email services. Microsoft Support and Recovery Assistant can help you resolve problems with Microsoft Office, Office 365, and Outlook.

⚙️ Step 3: Repair Microsoft 365 Installation

Find and edit files, scan documents, and create content on the go with access to Copilot Chat, productivity apps, and more — all in one place. The steps to access the repair tool vary depending on your operating system. If a Microsoft 365 application such as Word or Excel isn't working correctly, sometimes restarting it will resolve Outlook not sending emails fast fix the problem. OneDrive issues are a separate category of problems with Microsoft 365. Below we provide a more detailed list of issues and corresponding solutions.

Repair an Office application

• If after running the Remote Connectivity Analyzer Office 365 issues are not fixed, try using Microsoft Support and Recovery Assistant.
• To fix these related Office 365 issues, you can try disabling Add-Ins and then running Microsoft apps without them.
• If multiple versions of Microsoft Office are installed, Office 365 activation issues may occur.
• Check the version of Microsoft Office installed on your computer and your subscription name and expiry date.
• If your account is locked but you have not defined your recovery email address, try to fill out the Microsoft account recovery form.
• If you don’t connect the installed Office 365 applications to Microsoft servers for more than 30 days in a row, these applications are deactivated.
• Below we provide a more detailed list of issues and corresponding solutions.
• For example, items that you delete from SharePoint or Microsoft Teams are retained in the recycle bin for a certain period before permanent deletion.
• If you use Microsoft Office 365 Outlook as a standalone email client, and you cannot send and receive email messages, check the Outlook connection settings.

Therefore, you can locate the original files at their primary SharePoint site and restore them from there. If your Office 365 subscription has expired, buy a new license and extend your subscription for a new period. Then try to activate the installed Office 365 suite again on your computer.

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 attempt to upload or save a Microsoft 365 item.

Common Office 365 Issues and How to Solve Them

The update channel used by Office 365 depends on your Office 365 subscription plan and on configuration. Check the version of Microsoft Office installed on your computer and your subscription name and Troubleshoot Office 365 Sync and Login Issues expiry date. If you don’t connect the installed Office 365 applications to Microsoft servers for more than 30 days in a row, these applications are deactivated. Once a connection is established to Microsoft licensing servers, the license is renewed. Download and run the official Microsoft Support and Recovery Assistant (SaRA). It automatically diagnoses and repairs many Office 365 problems — including search indexing and sync issues.

Microsoft Support and Recovery Assistant

Open the required file, hit Share and then check the list of users that you can give the rights to edit a file. You can set access permissions for the entire organization or invite only the users you specify. Editing file permissions and providing users with appropriate access is a simple way to solve such Microsoft 365 problems. For example, items that you delete from SharePoint or Microsoft Teams are retained in the recycle bin for a certain period before permanent deletion.





Check the firewall on your computer, the router, and DNS configuration. 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 Repair Tool

You may need to remove old Microsoft Office licenses from your computer and install a new one. Protect your most important files, like your passport, driver’s license, or insurance information with OneDrive Personal Vault. This ensures that the system-wide search index service is active resolve Outlook not sending emails fast and linked to Office 365 apps.



The operating system on which your Office 365 applications are installed does not support the updated version of Microsoft Office 365. Windows 7 and Windows 8 do not support the latest Office 365 versions, and only Windows 10 supports these (Windows Server operating systems are not covered here). Microsoft recommends updating Windows, Microsoft Office and other software regularly.