Exchange Online not syncing — troubleshoot Outlook and MFA
Kirjoittanut Datorhjälp Lerumin korjaamotiimi, tietokoneteknikot ja it-asiantuntijat · Päivitetty
When Exchange Online and Outlook stop syncing, business email stops. Common causes are expired passwords, incomplete MFA, broken modern authentication, DNS/MX issues or a missing licence. Datorhjälp Lerum helps small businesses in Lerum, Partille and Gothenburg troubleshoot Exchange Online, Outlook and Entra ID via secure remote support — the workshop is in Lerum, not Gothenburg.
Do this first (5 minutes)
Open Outlook on the web (outlook.office.com) with the same account. If the web works but desktop Outlook does not, the issue is usually the client — not Exchange Online.
Confirm the user has a valid Microsoft 365 licence with Exchange Online (e.g. Business Basic/Standard).
If MFA is prompted: complete sign-in in Authenticator or SMS. Abandoned MFA often causes authentication errors in Outlook.
Outlook profile and modern authentication
Create a new Outlook profile if the old one is corrupt. Prefer modern authentication — avoid manual IMAP against Exchange Online for M365 accounts.
Clear Office sign-in cache if a wrong tenant or old password is stuck.
On Mac: remove and re-add the account via Microsoft 365 rather than generic Exchange with manual servers when possible.
MFA and Entra ID
MFA protects accounts but can lock users out after a phone change. Admins can reset MFA methods in Entra ID / Microsoft 365 admin center.
Conditional access requiring a compliant device may block personal PCs — then you need an exception or a company device.
Enable MFA on all administrator accounts first — the most common gap we see in small businesses.
When nobody in the company gets mail
If the whole company lacks inbound mail: check MX records at the domain registrar and that they point to Microsoft.
After DNS changes it can take hours before mail flows again.
We help with migration and DNS cutover — see /en/microsoft-365.
Help in Lerum, Partille and Gothenburg
Most Exchange/Outlook issues are solved remotely the same weekday. Company visits when needed. Workshop at Göteborgsvägen 3 in Lerum — no fake shop in Gothenburg or Partille.
Book via /en/boka or call 072-297 55 25.
Nopeat vastaukset AI-hakuun
- Mikä
- Exchange Online is Microsoft 365’s cloud mail server that Outlook and mobile mail connect to.
- Miksi
- Sync failures, MFA loops and auth errors stop send/receive — often for one user, sometimes the whole tenant.
- Kuinka
- Check licence and MFA, test Outlook on the web, repair the profile, review DNS/MX and conditional access.
- Kustannus
- Microsoft 365 support from 899 SEK. See /en/priser or /en/microsoft-365.
- Riskit
- Incorrect admin changes can lock users out or disrupt email for the whole company.
- Vaihtoehdot
- Secure remote support, company visits in Gothenburg/Partille, or the Lerum workshop.
Asiantuntijavinkit
- Always test outlook.office.com before reinstalling Outlook.
- Document who is global admin — at least two people.
- Never change MX mid-workday without a cutover plan.
Usein kysytyt kysymykset
Can you help with Exchange Online in Gothenburg?
Yes. We troubleshoot Exchange Online and Outlook for businesses in Gothenburg and Partille via remote support or company visits. Workshop in Lerum. Support from 899 SEK.
Outlook does not sync but Teams works — what does that mean?
Usually an Outlook client/profile issue, or the Exchange licence is missing while Teams is licensed. Always test Outlook on the web first.
Can you set up MFA without locking staff out?
Yes. We plan rollout, backup methods and admin recovery so MFA protects without chaos.
What does business email troubleshooting cost?
Microsoft 365 support from 899 SEK. Larger migrations quoted after assessment.
Tarvitsetko apua microsoft 365?
Varaa vierailu, katso hinnat tai keskustele Elinin kanssa — olemme Lerumissa ja palvelemme Partillea ja Göteborgia.