We seem to be experiencing this issue again on one of our clients end. Is there any way to resolve this?
Hi @Olga_Kempen, I’m sorry to hear about the issue. I’ve consulted with our Development team, and they’ve confirmed that recent changes to Outlook’s authentication framework have impacted our Add-in, causing attachments to not be added to both newly created and existing tasks.
Although this issue is similar to the previous one (Asana for Outlook add-in not adding attachments to tasks), it’s a new and unrelated problem. I’m moving your comment to a new topic to better track and share updates.
Our Developers are actively working with Microsoft on a fix, but unfortunately, they can’t provide an exact ETA just yet. I’ll be sure to share any updates here in the thread as soon as they’re available.
Thank you for your patience! 
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