The company tackles the impact of Microsoft basic authentication deprecation in Exchange Online and support for affected products.
Ricoh has been made aware of Microsoft’s decision to discontinue support for basic authentication for sending emails using the SMTP protocol in Exchange Online as of September 2025.
Following this change, OAuth2.0 authentication will be required on applications and devices when using the SMTP protocol to send emails.
A notice published by Ricoh explains which of its product functions are affected by the deprecation and the planned schedule for OAuth2.0 authentication support.
After basic authentication is discontinued, an error will occur when sending emails using the following functions:
- Sending email using the scan function
- Sending internet fax
- Sending fax to an email address
- On-demand Email Notification (function that notifies machine status by email)
- Auto Email Notification (function that sends error notification to a designated administrator email address)
- Sending error notification when using Mail to Print
Ricoh’s response to this change
Firmware supporting OAuth2.0 authentication will be made available starting July 2025. Please refer to section 3, “Supported models and OAuth2.0 authentication firmware schedule” for details.
If your device does not support automatic firmware updates or if automatic firmware updates is not enabled, then updates must be applied manually using the RICOH Firmware Update Tool. After the firmware is updated, you will also need to configure the authentication settings from Web Image Monitor. For detailed instructions, please refer to the document “Guide to set up OAuth2.0 authentication for sending Microsoft Exchange Online email” below.
Ricoh added: “Until firmware for OAuth2.0 authentication is available for your product, we recommend switching to methods that do not rely on email transition or using email services other than Exchange Online.”
For a list of affected devices and further information, please visit https://www.ricoh.com/info/2025/0526_1.
