Microsoft 365
Fixes for Microsoft 365 and Office 365 account, OneDrive and Copilot problems, including sign-in errors, full storage and apps that won't connect.
Browse guides →Pick the topic that matches what you need.
Fixes for Microsoft 365 and Office 365 account, OneDrive and Copilot problems, including sign-in errors, full storage and apps that won't connect.
Browse guides →Excel troubleshooting guides: formulas that return 0 or turn into text, divide-by-zero errors, a missing formula bar and OneDrive connection problems.
Browse guides →Troubleshooting for Word, PowerPoint, OneNote, Access, Publisher and Exchange Online: activation prompts, missing apps, formatting bugs and file errors.
Browse guides →Step-by-step fixes for New Outlook problems: missing menus, signature and folder issues, spell check, shared mailboxes, syncing and startup errors.
Browse guides →Fixes for Microsoft Teams meeting problems: missing meeting options in Outlook, calendar sync issues, screen sharing, meeting IDs and Planner in Teams.
Browse guides →Use Security info if the user still has another sign-in method; use Microsoft Entra admin center when an admin must reset MFA.
If SharePoint keeps losing connection, test the browser, account, sync client, and network in order to find the failing layer fast.
OneDrive keeps processing changes for a few minutes after a normal file burst, but if it stays there for 30 to 60 minutes with no file count change, treat it as stuck.
PowerPoint keeps crashing on Windows 11 when the cause is usually a bad file, a broken add-in, a graphics driver problem, or a damaged Office install.
Check separator syntax, range shape, and whether the function exists in Sheets. Use the error code to narrow the fix fast.
Start with Safe Mode, then remove add-ins, and rebuild the profile if Outlook still hangs. Covers classic Outlook, new Outlook, Mac, and mobile.
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