OAuth2.0 Information
Impact on DEVELOP Products and Response due to Discontinuation of Basic Authentication for SMTP in Microsoft Exchange Online / Google Workspace
April 1, 2026
OAuth2.0 Information - Impact on DEVELOP Products and Response due to Discontinuation of Basic Authentication for SMTP in Microsoft Exchange Online / Google Workspace
Thank you for your continued use of our products.
Microsoft announced that the disabling of Exchange Online SMTP AUTH Basic Authentication has been postponed. The vendor plans to announce the final removal date in the second half of 2027. However, it is worth noting that SMTP AUTH Basic Authentication will be disabled by default at the end of December 2026. For more details, refer to the official update on the “Updated Exchange Online SMTP AUTH Basic Authentication Deprecation Timeline” page.
Google announced end of support for less secure apps on April 29th 2025, taking effect on May 1, 2025. See their official update on the Google Workspace Updates page.
After these dates, sending emails via SMTP in Exchange Online or Gmail (Google Workspace) will require authentication using OAuth 2.0.
We would like to inform you about the affected features of our products (MFPs/printers), and the schedule for releasing firmware updates which support OAuth 2.0 authentication.
Affected Features
After the discontinuation of Basic Authentication, the following email transmission functions will no longer be available and may result in errors, if your device is configured to use Exchange Online or Gmail’s SMTP server.
Product Groups (*1) | Affected Features |
|---|---|
＃1, ＃2, ＃3 | Scan to E-mail, |
Internet Fax TX | |
Integration with a fax server (RightFax etc.) | |
Forward TX, | |
TX Result Report Print | |
Status Notification Setting, | |
＃4, ＃5, ＃7 | Scan to E-mail, |
＃6 | Scan to E-mail, |
＃9 | Scan to E-mail, |
＃10 | Scan to E-mail, |
(*1) For Product Groups refer to List of Affected Products below.
Planned Response
Updated firmware supporting OAuth 2.0 has been released for the main models.
Please refer to the “List of Affected Products”.
The updated firmware will be applied sequentially, either remotely or during the next visit by your authorized DEVELOP service representative.
After updating the firmware, follow the instructions in the relevant setup guide to configure OAuth 2.0 authentication.
Product Groups | OAuth 2.0 Setup Guide |
|---|---|
＃1 | |
＃2 | |
＃10 | In preparation |
Limitations and Notes
Refresh tokens can only be obtained via the administrator settings on the device panel. Obtaining refresh tokens via Web Connection is not supported due to technical limitations. (Product #1, #2, #10)
List of Affected Products
The list of affected products and the countermeasure firmware are as follows:
Product Group | Product Name | Countermeasure Firmware | |
|---|---|---|---|
Release Schedule | Version | ||
＃1 (*2) | ineo+ 360i/300i/250i | Released | F233-G00-T8(00) |
ineo+ 4050i/3350i | Released | F233-G00-T8(00) | |
ineo+ 3320i | Released | F233-G00-T8(00) | |
ineo+ 4000i/3300i | Released | F233-G00-T8(00) | |
ineo 306i/266i/246i/226i | Released | F233-G00-T8(00) | |
ineo+ 650i/550i/450i | Released | F233-G00-T8(00) | |
ineo+ 750i | Released | F233-G00-T8(00) | |
ineo 750i | Released | F233-G00-T8(00) | |
ineo 650i/550i/550i | Released | F233-G00-T8(00) | |
ineo 360i/300i | Released | F233-G00-T8(00) | |
ineo 4750i/4050i | Released | F233-G00-T8(00) | |
ineo 4700i | Released | F233-G00-T8(00) | |
ineo+ 287i/286i/266i/ 257i/227i/226i | Released | F233-G00-T8(00) | |
ineo 950i/850i | Released | F233-G00-T8(00) | |
ineo+ 361i/301i/251i | Released | F233-G00-T8(00) | |
ineo+ 651i/551i/451i | Released | F233-G00-T8(00) | |
ineo+ 751i | Released | F233-G00-T8(00) | |
ineo 361i/301i | Released | F233-G00-T8(00) | |
ineo 651i/551i/451i | Released | F233-G00-T8(00) | |
ineo 751i | Released | F233-G00-T8(00) | |
ineo+ 4051i/3351i | Released | F233-G00-T8(00) | |
ineo+ 3321i | Released | F233-G00-T8(00) | |
ineo+ 4001i/3301i | Released | F233-G00-T8(00) | |
ineo+ 4751i | Released | F233-G00-T8(00) | |
ineo 4751i/4051i | Released | F233-G00-T8(00) | |
ineo 4701i | Released | F233-G00-T8(00) | |
＃2 | ineo 367/287/227 | Released | F000-GC3-YE(00) |
ineo+ 368/308/258 | Released | F000-GC3-YE(00) | |
ineo+ 287/227 | Released | F000-GC3-YE(00) | |
ineo 306/7228/266 | N/A | ||
ineo 758/808 | Released | F000-GC3-YE(00) | |
ineo 958 | Released | F000-GC3-YE(00) | |
ineo+ 658/558/458 | Released | F000-GC3-YE(00) | |
ineo+ 266/256/226 | N/A | ||
ineo 558/458/368/308 | Released | F000-GC3-YE(00) | |
ineo+ 3851/3351 | Released | F000-GC3-YE(00) | |
ineo+ 3851FS | Released | F000-GC3-YE(00) | |
ineo 4752/4052 | N/A | ||
ineo+ 759/659 | Released | F000-GC3-YE(00) | |
ineo 368e/308e | Released | F000-GC3-YE(00) | |
ineo 658e/558e/458e | Released | F000-GC3-YE(00) | |
＃3 | ineo 4750/4050 | N/A | |
ineo+ 3110/3100P | N/A | ||
bizhub C754e/C654e | N/A | ||
bizhub 654e | N/A | ||
＃4 (*3) | ineo 226/246/236/216/7223/206 | N/A | |
ineo 225i/215i/7121i/245i | Released | V4.00 | |
ineo 205i | Released | V4.00 | |
ineo 247i | Released | V2.00 | |
ineo 227i | Released | V2.00 | |
ineo 207i | Released | V2.00 | |
＃5 (*3) | ineo+ 3120i | Released | 202505290339 |
ineo+ 3100i | Released | 202505290415 | |
＃6 (*3) | ineo 4221i | Released | 1.06 |
ineo 4201i | Released | 1.06 | |
ineo 5021i | Released | 1.06 | |
ineo 5001i | Released | 1.07 | |
ineo 4020i | Released | X2511101106 | |
ineo 4000i | Released | 1.34 | |
ineo 5020i | Released | X2511101106 | |
ineo 5000i | Released | 1.38 | |
＃7 (*3) | ineo 4702P/4402P/3602P | Released | 240.246 |
ineo 4422/3622 | Released | 240.246 | |
ineo 4700P/3301P/4000P | N/A | ||
ineo 4020/3320 | N/A | ||
＃9 (*3) | ineo 165/165e | N/A | |
ineo 185/185e | N/A | ||
ineo 185en | Released | V3.00 | |
ineo 165en | Released | V3.00 | |
＃10 (*3) | ineo+ 5080 (Own Controller: IC-613) ineo+ 5070 (same as above) | Under planning | |
ineo+ 14010 (Own Controller: IC-614) ineo+ 12010 (same as above) ineo+ 14010S (same as above) ineo+ 12010S (same as above) ineo+ 10500S (same as above) ineo+ 10500 (same as above) | Under planning | ||
ineo+ 4080 (Own Controller: IC-609) ineo+ 4070 (same as above) ineo+ 4065 (Own Controller: IC-607) ineo+ 4065P (same as above) ineo+ 84hc (Own Controller: IC-609) ineo+ 74hc (same as above) | Released | GEJ-80 Own Controller: | |
ineo+ 7100 (Own Controller: IC-609) ineo+ 7090 (same as above) | Under planning | ||
ineo+ 14000 (Own Controller: IC-610) ineo+ 12000 (same as above) | Under planning | ||
ineo 7136 ineo 7120 ineo 7136P | Under planning | ||
ineo 2100 | Under planning | ||
ineo 1100 | Under planning | ||
ineo 6136 ineo 6120 | Under planning | ||
ineo+ 3080 ineo+ 3080P ineo+ 3070 ineo+ 3070L ineo+ 83hc | Under planning | ||
ineo+ 6100 ineo+ 6085 | Under planning | ||
(*2) The special firmware (F232-GC4-SA(00)) has been released in December 2025.
(*3) These products support OAuth2.0 only for Exchange Online. For Gmail, please use the workarounds on the table below.
Workarounds
For devices marked as N/A under Release Schedule and devices not listed, no firmware update is planned. Please use the workaround described below.
Product Groups | Affected Features | Workaround 1 | Workaround 2 (*4) |
|---|---|---|---|
＃1,＃2, ＃3 | Scan to E-mail, | Use scan to other than e-mail. |
|
Internet Fax TX | Use IP Address Fax, IP Fax (SIP), G3 Fax | ||
Integration with a fax server (RightFax etc.) | Register and use applications other than e-mail | ||
Forward TX, | Redirect to other than e-mail | ||
TX Result Report Print | Print on paper | ||
Status Notification Setting, | No workaround | ||
＃4, ＃5, ＃6, ＃7, ＃8, ＃9 | No workaround |
| |
＃10 | Scan to Email | No workaround |
|
Status notification settings (e-mail notifications) | Use scan functions other than e-mail (Scan to SMB, FTP, WebDAV). |
(*4) For more information, please refer to the following links:
Contact Information
For any inquiries regarding this matter, please contact our support team.