If network connectivity is solid and you’ve ruled out firewall or proxy blocks, clearing cached credentials and repairing the Office installation are the next logical steps. Office 365 uses several internet endpoints and cloud services to authenticate users and validate licenses. If Tech fixes at FixTechGuide the provided recommendations don’t help you resolve the issues or you want to send Office 365 complaints, call Microsoft support. You can unintentionally send an important Microsoft 365 item to the recycle bin, especially if you have too many files on your device’s hard drive.

Checking Office 365 Service Health

In addition to the Office 365 problems explained in the blog post, you may encounter issues that cause data loss. You can resolve this Office 365 issue simply by purchasing additional cloud storage space from Microsoft. Consider implementing a regular storage cleanup practice with Microsoft 365 recycle bin checks. Keep in mind that the files you delete can temporarily consume storage space. 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.

Microsoft recommends updating Windows, Microsoft Office and other software regularly. Microsoft updates are released on a regular basis and allow you to protect software against known threats, fix bugs, and so on. Let’s find out what you can do if updates are not installed automatically, and what factors can cause update issues. Office 365 syncing problems are common for Office Mobile, but sometimes similar issues may occur for Office 365 desktop applications like OneDrive and Outlook.

• Open the required file, hit Share and then check the list of users that you can give the rights to edit a file.
• Many issues that you may face day-to-day can be fixed on the client side.
• They can either be simple, like the OneDrive service not running or the missing OneDrive icon on the taskbar, or more complex, like OneDrive conflicting with Microsoft 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).
• For more advanced or persistent cases, reviewing Azure AD sign-in logs, double-checking MFA setups, or investigating Conditional Access policies may be necessary.
• Reboot your system and try to launch your Outlook app after to check if the synchronization issues are solved.
• This error appears when you attempt to upload or save a Microsoft 365 item.

Still, the files you send to the recycle bin are not permanently removed. File and storage issues with Microsoft Office 365 are more serious than other issues. They are not merely inconvenient and slow down work but can also lead to critical data loss.

Common Problems with Office 365 OneDrive

Remember, if all else fails, reaching out to Microsoft Support directly or using their official support documentation can provide tailored assistance for complex organizational setups. With the right planning and knowledge, nearly all sign-in and activation troubles can be resolved quickly and efficiently. For more advanced or persistent cases, reviewing Azure AD sign-in logs, double-checking MFA setups, or investigating Conditional Access policies may be necessary. And if your environment is particularly security-conscious, keep in mind that policy-based blocks on specific devices or geographic regions can also interfere with Office activation. If you’re confident your credentials are correct and the sign-in still fails, proceed to the next step for deeper inspection of license status and subscription details. This error appears when you attempt to upload or save a Microsoft 365 item.

Recover your account

In this case, consider using safe mode, which is useful for Office 365 troubleshooting. Installing Office 365 updates can fail for different reasons, and some of them are listed below. Make sure that you have entered the correct Office 365 username and password. Safari can cause Microsoft 365 issues due to the Intelligent Tracking Prevention (ITP) feature. Use the NAKIVO solution to back up Microsoft 365 data in Exchange Online, Teams, OneDrive and SharePoint Online for uninterrupted workflows and zero downtime.



Office 365 applications installed on a computer must connect to Microsoft servers over the internet at least once every 30 days for the license to be checked and validated. 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. You may encounter issues when using any application, and Office 365 is no exception. Not all issues are caused by bugs left unpatched by the software vendor or by third-party applications like the recent Crowdstrike incident that caused a global O365 outage.

Advanced Troubleshooting Scenarios

Many issues that you may face day-to-day can be fixed on the client side. If you encounter an issue in Office 365 that can only be fixed by the vendor, Microsoft usually releases an update to resolve any known issues as soon as possible. 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 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.



Always define a recovery email address when configuring your Office 365 account. If an incorrect password is entered multiple times, after several unsuccessful login attempts, your Office 365 account will be locked. 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 want to use Office 365 applications installed on a terminal server, you should use Office 365 Pro Plus, which supports Shared Computer Activation. Completing the above steps resolves a large majority of typical sign-in and activation problems. If the issue persists, Microsoft has created a dedicated tool called Microsoft Support and Recovery Assistant (SaRA) to automate many troubleshooting tasks.

Handling Office 365 Domain Verification Problems

Service health is the online tool available for Office 365 for organizations (if you have work and school Office 365 accounts). Only Office 365 administrators can access this tool in the Office 365 admin center. Use the Service health dashboard to find possible Office 365 issues and read the provided advice on how to fix them. 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).