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SMF 2.1.0 Released

Started by Sesquipedalian, February 09, 2022, 12:42:51 PM

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Dear Members,

Simple Machines is pleased to announce the official release of the long awaited SMF 2.1.

This release marks the transition of SMF 2.1 into the current stable release of SMF. This means that:

  • SMF 2.1 is now the recommended version for use on live production forums. We encourage everyone to start planning for an upgrade to SMF 2.1.
  • SMF 2.0 remains supported and will continue to receive security updates for the foreseeable future, but this release officially marks the end of further 2.0 development. We will release a separate announcement for any future changes to SMF 2.0's status.

Notable changes in 2.1

The changes between SMF 2.0.x and SMF 2.1 are too many to count, but here are a few highlights:

  • New features for users
    • A new WYSIWYG editor, SCEditor
    • Real-time alerts in addition to email notifications
    • A new default theme with full support for mobile devices
    • Draft messages (you can save & resume later)
    • Mentions using @name syntax
    • Drag & drop attachments
    • Attachments can be embedded directly into post text
  • New features for moderators and administrators
    • An improved Administrator Control Panel
    • Support for moderator groups, not just individuals
    • Many security enhancements, including support for optional Two Factor Authentication
    • IPv6 support
    • Designed with GDPR support
  • New features for modification and theme authors
    • A massive expansion of the number of integration hooks available
    • More powerful BBCode possibilities
    • Background tasks
    • New capabilities in the Package SDK

You can learn more about the many new features and changes in SMF 2.1 here.

How to install a new SMF 2.1 forum

You can install SMF 2.1 using the "Full Install" package from the Download page.

Please refer to the Online Manual for more details about installing.

How to upgrade to SMF 2.1

You can upgrade to SMF 2.1 from any previous version using the "Large Upgrade" package from the Download page.

Be aware that upgrading to SMF 2.1 will remove any modifications you may have installed on your existing SMF forum, and that SMF 2.1 is incompatible with custom themes designed for earlier versions of SMF. You will need to install new versions of those modifications and/or themes after upgrading. Many modifications and themes have already been updated by their authors to support SMF 2.1, but you may wish to check the status of individual modifications or themes before proceeding.

Please refer to the Online Manual for more details about upgrading.

With this release we'd like to take the opportunity to recognize the effort and dedication of all the people who have volunteered their time to help the SMF project. We would like to thank everyone, past and present, who has contributed to the development of SMF over the past years.

Finally, as always, please do not use this topic for support requests. You will receive a much quicker and better response by asking for help in the SMF 2.1.x Support board.

Thank you for using SMF!

Simple Machines
I promise you nothing.

Sesqu... Sesqui... what?
Sesquipedalian, the best word in the English language.

Diego Andrés

Congrats team and community!

SMF Tricks - Free & Premium Responsive Themes for SMF.

Aleksi "Lex" Kilpinen

A huge thank you is in order, to everyone involved over the years! :)
"Before you allow people access to your forum, especially in an administrative position, you must be aware that that person can seriously damage your forum. Therefore, you should only allow people that you trust, implicitly, to have such access." -Douglas

How you can help SMF


Going for most liked post ever? ;)
"Faith is what you have in things that don't exist."
--Homer Simpson

Es gibt hier im Forum ein deutsches Support-Board!


Major congratulations to the whole team and everyone who contributed to making SMF 2.1 a reality. Thank you SO much to everyone who contributed for all their amazing and hard work, it's massively appreciated. :) I'm so happy! :) Well done all!
((U + C + I)x(10 − S)) / 20xAx1 / (1 − sin(F / 10))
President/CEO of Simple Machines - Server Manager
Please do not PM for support - anything else is usually OK.


Great job everyone!  8)


Thanks to the entire team and community for all the effort that went into this.
Jeremy D ~ Site Team / SMF Developer ~ GitHub Profile ~ Join us on IRC @ ~ Support the SMF Support team!


DO NOT pm me for support!


Running SMF 2.1 with latest TinyPortal at

-Rock Lee-

Thanks to everyone who made this happen, great job ;D
¡Regresando como cual Fenix! ~ Bomber Code
Ayudas - Aportes - Tutoriales - Y mucho mas!!!


That's great, thanks.


Congratulations! It's been a long road, getting from there to here.

Thanks to everyone involved, and long may it continue.


Good work - thank you all.


Congratulations and thanks to everyone involved! 8) - Custom Logos - My Themes on SMF | My Themes on ShadesWeb - Sniffing out the road ahead

Dream as if you'll live forever; Live as if you'll die today. - James Dean


It took a lot of time, but with the mega effort and dedication from the whole team, this is now a reality.

Very proud of you all. Today is a big day!  8)
"Greeting Death as an old friend, they departed this life as equals"


HUGE CONGRATS!! Going to work out a plan to upgrade our 19-year old forum soon (going back to the days of YaBB)!


Great job, thank you all for your work.  :)

Doug Heffernan

Wow. Today is definitely a very good day. Congratulation to everyone involved that made this possible. Thank you for all the hard work and dedication you guys and gals put in!
Know that it is recognized and greatly appreciated


Great to see. Well done to everyone involved :)

Bob Clifton

Thanks to EVERYONE for this GREAT SOFTWARE .
If a Grasshopper Carried a Shotgun the Birds wouldn't Mess With Them