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When we are working with third-party software we might encounter some problems – it’s obvious and normal. Office 365 is currently the most popular SaaS (Software-as-a-Service) platform for productivity but even with its scale some Office 365 issues might occur. Those mentioned in this article are only the tip of the iceberg and related to software itself.  
  
  
  
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Always define a recovery email address when configuring your Office 365 account.Editing file permissions and providing users with appropriate access is a simple way to solve such Microsoft 365 problems.While M365 is highly stable, it’s not immune to occasional disruptions.Synchronization Office 365 issues mostly happen to Office Mobile apps.  
  
The operating flush DNS and re-sync Outlook 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 inbox repair tool alternative 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.  
  
  
  
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Domain verification issues can also prevent the normal use of the Microsoft Office 365 suite. 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. Still, the files you send to the recycle bin are not permanently removed. Installing Office 365 updates can fail for different reasons, and some of them are listed below.  
  
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.  
  
  
  
  
  
Organizations value the capabilities that the Microsoft 365 suite provides for shared access Fix Outlook and Office365 Sync Issues 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.  
  
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.  
  
  
  
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.