Aug 10 2016 01:13 AM
Following the roadmap of Office 365 http://fasttrack.microsoft.com/roadmap "Edit post in Yammer : Provides users the ability to edit posts after initial posting while maintaining the discussion thread history." is 'in Development'!
Feb 02 2017 09:42 AM
Gotta love Msft!
We're busy updating the FastTrack site for you and will be back soon.
Apr 25 2017 08:55 AM
This is now live. You can Edit your posts.
Aug 28 2017 12:58 PM
If your post includes a file, is it possible to also edit and re-upload the file?
Mar 19 2018 10:36 PM
Does this apply to Polls, if you wish edit an answer prompt you have a typo in?
Mar 20 2018 02:16 AM
You can always upload a new version of your file. Just open the file and click on the "go to file" link shown at the bottom. Each file has it's own page. There you will see the option to upload a new version.
Mar 20 2018 02:22 AM
You can't change the poll answers. Imagine lots of people voting on the poll and then changing the order of the answers. Wouldn't worry too much about typos. You can always comment below the poll and mention the typo or you can delete the poll if nobody has yet voted on it.
Sep 18 2019 05:19 AM
Unfortunately it's not possible to edit posted links nor add/remove images, one has to re-post instead!
Re editing, versioning with history or limited time to edit ie. 1-2mins might be even better.