CloudExtend Help Center

Troubleshooting: Unable to log in to ExtendSync using my Microsoft account

ExtendSync Outlook | See list of errors when logging in with a Microsoft account and how to resolve them

Updated this week

Here is the list of possible errors when logging in with a Microsoft account and how to resolve them.

CEFI Error code	Error Message	Action Required
CEFI-1113	`RefreshTokenCookieIsRequired`	Make sure third-party cookies are enabled in your browser. ➡️ See detailed steps to enable third-party cookies.
CEFI-E1118	`ErrorCode:invalid_request, ErrorDescriptionattributes required: [given_name]`	The user’s first name field is missing in the Microsoft portal. Action: Admin must add the user’s first name in Azure AD / Microsoft Entra ID ➡️ How to add first name to Microsoft profile
CEFI-E1119	`ErrorCode:invalid_request, ErrorDescriptionattributes required: [email]`	The user’s email address attribute is missing in Azure AD. Action: Admin must add the email attribute to the user’s profile. ➡️ How to add email address to Microsoft profile
CEFI-E1120	`ErrorCode:server_error, ErrorDescriptionAADB2C90273: An invalid response was received : 'Error: access_denied,Error Description: AADSTS65004: User declined to consent to access the app.`	The user or admin denied consent for ExtendSync. Action: User should try logging in again and send a new request for admin approval.
CEFI-E1120	`ErrorCode:server_error, ErrorDescriptionAADB2C90273: An invalid response was received : 'Error: access_denied'`	Similar to above, consent was declined. Action: Regrant consent. User must retry login and request admin approval.
CEFI-E1120	`ErrorCode:access_denied, ErrorDescriptionError response from Identity Provider; error=access_denied`	Access denied by the Microsoft Identity Provider. Action: Regrant consent. User must retry and resend admin approval request.
An error occurred while sending the request.	`Error while handling callback.` `System.Net.Http.HttpRequestException: An error occurred while sending the request.` `---> System.IO.IOException: The response ended prematurely.`	This indicates a temporary network error. Action: Wait a few minutes and try again.
invalid_request	`ErrorDescriptionRead timed out`	The request timed out while connecting to Microsoft. Action: Try again. Usually resolves on retry.
server_error	`ErrorCode:server_error, ErrorDescriptionAADB2C90289: We encountered an 'invalid_grant' error connecting to the identity provider.`	The Microsoft Identity Provider failed to grant access. Action: Regrant consent. User should retry login and resend admin request.
NA	`A temporary issue occurred. Please try again later.`	Temporary system issue. Action: Wait and try again later.

💡 Tips for Admins

If multiple users in your organization experience login issues:

Verify that the ExtendSync application consent has been granted in Azure AD / Microsoft Entra ID.
Confirm that all users have valid email and first name attributes in their Microsoft profiles.
Check that the Microsoft Graph API permissions were granted on behalf of your organization.

➡️ Learn how to re-grant Microsoft consent for ExtendSync

Related Articles

Troubleshooting: Autopilot watch renewal failed

Admin Portal: Grant Microsoft API Access

Error: Your subscription is invalid or expired

Error: CEFI-E1118 Your Microsoft admin needs to add your first name to your profile

Troubleshooting: Issue with logging into ExtendSync for Outlook NetSuite Edition