people cannot accept to do list link

Hi @Cameron Brown,

Welcome to Microsoft Q&A forum.  

Thank you for reaching out and letting us know about the issue your employees are experiencing when trying to join your shared To Do list. I understand how important it is for your team to collaborate seamlessly, and I appreciate you providing details about the error message and the number of users affected.

We’ve confirmed that this issue is part of an ongoing incident impacting some users.

Our engineering team is aware and actively working on a fix to restore full functionality as soon as possible. For more details, your admin can review the incident report in the Microsoft 365 Admin Center under issue ID MO1213801.

Please note: Only IT administrators have access to the Microsoft 365 Admin Center for additional information.

At this time, no action is required on your part. Once the systems are fully restored, Microsoft To Do should function normally again without any changes to your settings or devices. We appreciate your patience while our team works diligently to resolve this and ensure the best experience for all users.

As community moderators, we kindly ask for your understanding that our access to internal development details is limited. Our primary role is to guide users toward the appropriate resources and support channels. While we may not have visibility into performing deeper backend analysis, we’ll continue doing our best to support you within the scope of our responsibilities. 

I hope this information is helpful. Please feel free to reach out anytime if you need further assistance. I’m happy to assist and truly hope this guidance proves useful.

If you find this post helpful, kindly consider marking it as the accepted answer. Doing so will help others in the community with similar questions find solutions more quickly.

Thank you for your kindness and contributions to the forum.   

May the New Year bring happiness and success to you and your family. 

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