Microsoft 365 Support

Microsoft 365 Support for Small Businesses

By Vincent Walker, Limelight IT  ·  June 2026  ·  5 minute read

Microsoft 365 is the backbone of most small businesses — which means when something goes wrong with it, everything stops. Email not sending, OneDrive not syncing, Teams calls dropping, accounts locked out — Limelight IT fixes Microsoft 365 problems for small businesses quickly and remotely.

Common Microsoft 365 problems we fix

Microsoft 365 is reliable but it's not infallible. The most common issues we see with small businesses are: email delivery problems (emails going to spam, not sending, not receiving), OneDrive sync issues, Teams performance problems, account lockouts and MFA issues, and incorrect DNS configuration causing authentication failures.

Microsoft 365 support

Email delivery and authentication

Emails going to spam, bouncing, or not delivering at all — usually caused by missing or incorrect SPF, DKIM or DMARC records. We diagnose and fix email authentication issues remotely.

The fix

Email authentication fix — SPF, DKIM and DMARC correctly configured for your domain.

Microsoft 365 support

OneDrive and SharePoint sync

OneDrive not syncing, files missing, sync errors — we fix OneDrive and SharePoint issues remotely and make sure your backups are actually working.

The fix

OneDrive sync fix and backup verification.

Microsoft 365 support

Account recovery and MFA

Locked out of your Microsoft 365 account, lost access to MFA, or struggling with the account recovery process — we walk you through it step by step.

The fix

Microsoft 365 account recovery and MFA setup support.

Microsoft 365 support for small businesses across the UK

Remote Microsoft 365 support for small businesses across the UK. Same day sessions available. No minimum contract.

Microsoft 365 support for your small business

Get in touch — remote Microsoft 365 support, same day.

Get in Touch →