A Microsoft file hosting and synchronization service.
Try these checks in order:
- Verify the account credentials by signing in to the Microsoft account dashboard. If sign-in there works, the username and password are valid.
- For OneDrive on the laptop, if the OneDrive icon is gray or has a line through it:
- Select the OneDrive icon.
- At the Set up OneDrive screen, enter the email address and password again.
- If OneDrive shows a connection error during sign-in, restart OneDrive. If the app is missing or outdated, install the latest version.
- If OneDrive still does not open in browser or app, test whether the network is blocking Microsoft services:
- Temporarily disconnect any VPN.
- Check whether a firewall or internet provider is blocking OneDrive or Microsoft 365 access.
- As a quick test, try a mobile hotspot instead of the current network.
- If the issue is on iPhone or iPad mail access for Outlook or Hotmail:
- Open Settings.
- Go to Mail > Accounts.
- Select the Outlook account.
- Open Account Settings or the Password field.
- Enter the correct or updated password.
- Tap Done.
- Open the Mail app and confirm mail sync works.
- If the mobile apps keep prompting for a password, install the latest version of OneDrive or Outlook mobile.
- If OneDrive sign-in shows "Selected user account does not exist in tenant 'Microsoft Services'" or "cannot access the application '00000003-0000-0ff1-ce00-000000000000'", that means a personal account is being used against a work or school OneDrive site. Use the correct personal Microsoft account for personal OneDrive, or the work/school Entra ID for an organization account.
- If the problem affects only OneDrive and Outlook access but the Microsoft account itself works, use the Microsoft account sign-in helper for personal account recovery and sign-in troubleshooting.