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on November 25, 2025
A good idea would be to delete profile or alternatively to create a new user profile and try to login to O365 account. 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. If the license is valid and assigned correctly, the next steps involve checking network-related blocks and performing initial device-level troubleshooting. There’s quick repair, which I’ve never had success with and Online Repair, which I’ve always had success with.
One of the features of Office 365 is that users can work on their current Word or PowerPoint projects either on their mobile device or computer. As long as you’re working with your account logged in, the application should automatically save your progress on OneDrive and sync it to your device. However, errors can happen when the device is currently offline or not connected to a network. When you install Office it's automatically linked to your Office 365 plan.
It’s less destructive because settings, templates, and other application data will not be deleted. I do it again, and I get this error — well, now I can’t show you because Excel is refusing to open up at all. The error indicates that my previous open was unsuccessful, and asks if I would like to open Excel in safe mode. So I close Excel, try to open it again without safe mode, and… nothing. Click the Close button, then try your problem Office application again.
Use this easy fix tool to uninstall Office and then follow the steps to reinstall Office. All you need to do is log in to your OneDrive account on the web browser, and drag the files you want to the documents folder. If after running the Remote Connectivity Analyzer Office 365 issues are not fixed, try using Microsoft Support and Recovery Assistant.
Now, let’s look at how to fix these issues step by step. If none of the above fixes work, the problem may be caused by deeper corruption or <a href="https://office365emailfix.blogspot.com/2025/10/fix-outlook-not-sending-or-receiving.html">microsoft 365 setup guide</a> server-side issues. In that case, it’s best to contact Microsoft Support or your IT administrator. If disabling the antivirus resolves the issue, consider using built-in Windows Defender as it is less likely to cause conflicts. Your trusted tech help & troubleshooting hub. If the error occurs during a Windows update, the Windows Troubleshooter can help identify and fix the problem.
But it doesn’t mean it’s impossible for some Office 365 issues to occur. The important thing here to remember is that not all problems are caused by bugs or inappropriate coding on the vendor site. The more probable option is that the Office 365 issue occurs, and can be fixed on the client-side. Check the version of Microsoft Office installed on your computer and your subscription name and expiry date. 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.
The good news is that the majority of problems can easily be solved on the client’s side. To fix these related Office 365 issues, you can try disabling Add-Ins and then running Microsoft apps without them. Make sure that network access to the Microsoft servers is not blocked. Check the firewall on your computer, the router, and DNS configuration. Check to see if multiple copies of Office are installed on your system.
Microsoft 365 provides online services and server products for your business with solutions for small to enterprise scale. This page provides guidance for troubleshooting issues with these products and services. Users need licenses to install Office and to use Outlook, SharePoint Online, Lync Online, and other services. As the Office 365 for business admin, you're responsible for Managing user software in Office 365. You assign licenses to new users when creating new accounts, or add licenses to existing users, see Assign licenses to users in Office 365 for business.
That’s good because that’s what you’ll try next. Note that it says "The app’s data will be deleted." This does not include your files. My spreadsheets will still be there no matter what. What a reset does is reset settings, history, and perhaps more that is specific to the configuration of the program. A recovery file of your workbook also helps ensure you'll have access to your data if your workbook is deleted accidentally or if it becomes corrupted.
You’ll see a dialog box like the one shown in Figure 9 open up and ask you to confirm installation. If you have any Office applications open, you’ll be asked to close them before the repairs can complete. On my test machine, for example, I had Outlook open. This provoked the request shown in Figure 4 (where, of course, I clicked Continue to close Outlook so repairs could work through to completion). A window opens to ask you if you’re ready to commence repairs.