Configuring preferences and options in Outlook.com
I take it you are referring to the option shown in the screen shot below?
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THIS WAS OFFERED BY A PREVIOUS COMMENT.
here's a solution that worked for me - in case others are having similar issues: I went to settings (top left of the ribbon), in Message List there's a section for Layout and there are three options: pick the "checkboxes" option and you'll get them back
seriously MS, how hard is it to leave things alone so people don't have to jump through these stupid hoops when you update things?
This worked perfectly for me and is simple
Configuring preferences and options in Outlook.com
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I take it you are referring to the option shown in the screen shot below?
Hi @John Colley
I’m glad to hear that selecting Checkboxes under Settings > Message List > Layout restored the missing checkboxes for you.
Thank you for confirming that this solution worked and for sharing the steps so clearly. Your feedback may help other users who encounter the same issue after an Outlook update.