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

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. These add-ins can cause issues such as app crashes or significant performance degradation.

Tools That Can Help

• Reboot your system and try to launch your Outlook app after to check if the synchronization issues are solved.
• Microsoft updates are released on a regular basis and allow you to protect software against known threats, fix bugs, and so on.
• When we are working with third-party software we might encounter some problems – it’s obvious and normal.
• There are few things that can happen to Outlook on the client side.
• For example, items that you delete from SharePoint or Microsoft Teams are retained in the recycle bin for a certain period before permanent deletion.
• When it’s a problem with an internet connection, check your wi-fi or ethernet connection, and contact the internet provided if required.

The operating FixTechGuide Office 365 troubleshooting 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). Check POP3 and SMTP settings for connecting to Microsoft mail servers (addresses of servers, ports, encryption, authentication). 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.

Fix Outlook Stuck on Synchronizing Subscribed Folders (2025 Guide)

It indicates that you have reached the storage limit specified by your subscription plan. For example, items that you delete from SharePoint or Microsoft Teams are retained in the recycle bin for a certain period before permanent deletion. Therefore, you can locate the original files at their primary SharePoint site and restore them from there. File and storage issues with Microsoft Office credential loop in Microsoft 365 365 are more serious than other issues. They are not merely inconvenient and slow down work but can also lead to critical data loss.

Fix Tech Issues Fast

Outlook and Office 365 sync issues can be frustrating but are almost always fixable. Start with basic network checks, enable Cached Exchange Mode, and repair your data files if needed. For persistent problems, rebuild your Outlook profile or use FixTechGuide’s free diagnostic tools to automate detection of authentication and IMAP errors in seconds. When Office 365 search stops working after updates, it’s usually a minor indexing or cache issue — not a major fault.

Tools that can help you fix Office 365 issues

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. Synchronization Office 365 issues mostly happen to Office Mobile apps. When you want to continue the work you did on the desktop, and the file is available there.

Step 5 – Reset IMAP Folder Path (For IMAP Accounts)

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. 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. Many issues that you may face day-to-day can be fixed on the client side. If connection status shows disconnected 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.



The serious problem occurs when we talk about any external threats like malware or ransomware that are not so easy to prevent and mitigate. Xopero ONE Backup and Recovery for Microsoft 365 ensures you with data protection, security, and business continuity. As the name of this tool suggests, Remote Connectivity Analyzer can identify Office 365 issues with connectivity. From Outlook desynchronisation to problems with OneDrive connection. The tool can help you detect issues by running tests for many features. When you encounter Office 365 issues with Outlook online, this app turns out almost completely useless.

Domain Verification Issues

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