There you can see possible Office 365 issues, and advice on how you can resolve them. The simplest one is a problem with a connection to the Internet, or a firewall blocking network connections. If you try to enter the wrong password too many times, and you didn’t set up a recovery email you can lock access to your account. If that happens you have to verify that this account belongs to you before you can change password, and to do that you need to fill out the Microsoft account recovery form. You can disable Add-Ins on launch by pressing CTRL and hitting the Microsoft Office app shortcut. In this case, consider using safe mode, which is useful for Office 365 troubleshooting.

Tools That Can Help

• An internet connection is not available or a firewall is blocking network connections.
• Good practice to avoid having Office 365 issues with signing in, is to have a recovery email.
• This restores missing or corrupted Office components that affect search indexing.
• Microsoft Office 365 is currently the most popular suite for productivity applications – thus it is important to mention the most common Office 365 issues.
• Check the firewall on your computer, the router, and DNS configuration.
• 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.

The operating clear Outlook credentials manager 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)

When you open the main expert Outlook tips by FixTechGuide productivity apps like Word, and Excel, on the main page you should be able to see all files you opened recently. In order for the recovery process to be available is the two-factor authentication disabled. Good practice to avoid having Office 365 issues with signing in, is to have a recovery email.

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

To fix these related Office 365 issues, you can try disabling Add-Ins and then running Microsoft apps without them. Reboot your system and try to launch your Outlook app after to check if the synchronization issues are solved. If you tried to enter your credentials, and it failed, even when you checked if every letter of it is correct. TrustedTech delivers unbeatable customer service, with experts in licensing and high-level technicians always on-call to answer your tech issues in-depth. Our Account Managers and Distribution Team fulfills orders quickly and efficiently, giving our customers digital downloads in record time so they can move on to their next big project.

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 troubleshoot Outlook synchronizing folders error 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.

How to Troubleshoot Common Microsoft 365 Problems and Issues

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. 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. Download the tool from Microsoft and run the Outlook diagnostic to auto-detect server and account issues. Office 365 Service Health is an online tool, available for organizations, accessible only by administrators, in Office 365 Admin Center.

Domain Verification Issues

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. OneDrive issues are a separate category of problems with Microsoft 365. 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. Below we provide a more detailed list of issues and corresponding solutions.