Outage in Constant Contact
V3 API Access Token Issue
Resolved Major
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Outage Details
We are experiencing an issue with generating new access tokens. Requests to obtain tokens for our V3 API are currently returning HTTP 400, with the errorSummary "Bad request. Accept and/or Content-Type headers likely do not match supported values." Existing tokens are not affected. Our engineers are aware of this issue and working to resolve it as quickly as possible
Components affected
Constant Contact API's and IntegrationsLatest Updates ( sorted recent to last )
RESOLVED
about 2 months ago - at 04/30/2025 03:51PM
The root cause of this issue has been identified and resolved. Token generation function has been restored.
INVESTIGATING
about 2 months ago - at 04/30/2025 03:13PM
We are experiencing an issue with generating new access tokens. Requests to obtain tokens for our V3 API are currently returning HTTP 400, with the errorSummary "Bad request. Accept and/or Content-Type headers likely do not match supported values." Existing tokens are not affected. Our engineers are aware of this issue and working to resolve it as quickly as possible
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