My contacts are missing or not in the address book
Outlook has 'Contacts' (the folder) and 'Address Book' (the lookup source). They get mixed up after a reinstall.
Try this first
- 1Outlook > bottom-left click the People icon. Are your contacts still there? Then nothing is lost; just not exposed as an address book.
- 2Right-click the 'Contacts' folder > Properties > Outlook Address Book tab > tick 'Show this folder as an e-mail Address Book'.
- 3Close Outlook fully, reopen, and test: new message > click 'To' > choose your contacts folder from the list at the top.
- 4Use outlook.office.com? Open People there to confirm contacts are in the cloud and not only local.
When to bring us in
If contacts are genuinely gone (not on web, not on phone), we can roll the mailbox back a few days via M365 recovery. Tell us early.
See also
- Outlook crashes or freezes on large attachmentsUsually the mailbox cache is the culprit, not Outlook itself. Shrinking or relocating usually helps within ten minutes.
- Teams: they cannot hear me, or I hear nothingIn our experience Teams usually picked the wrong audio device after a Windows update or a new headset.
- OneDrive has stopped syncingThe cloud icon is grey or has a warning. Locally changed files are not showing up for colleagues.
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