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 →
Start Word with winword /safe, disable add-ins if it opens, then repair Office if it still will not launch normally.
You cannot reset a Microsoft Forms response ID for an existing form. A new form or copy starts numbering at 1, while deletions can leave gaps.
Check Show Formulas first with Ctrl+` or Formulas > Show Formulas. If only one cell shows the formula, clear Text format and re-enter it.
A Teams meeting missing join link usually means the invite was never created, email security changed it, or the link is in another format. Start with the calendar item and invite source.
Office can keep switching back to dark mode when the Office theme, app setting, and document background do not match. This page shows what to change first.
OneNote not showing all notebooks usually comes from the wrong account, a hidden notebook list, sync problems, or a notebook that was never opened on this device.
Guides start from the questions readers actually ask and are checked against official documentation and manufacturer sources.
Read our editorial policy →