Inbox childFolderCount field incorrect/stale - Microsoft Graph API

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Posted on by trannguyen0410

When I use the action Send an HTTP request (Office 365 Users) with https://graph.microsoft.com/v1.0/users/@{items('Apply_to_each')?['Email']}/mailFolders/Inbox, I get "childFolderCount": 42, but when I use another send an HTTP request action to get all child folders https://graph.microsoft.com/v1.0/users/@{items('Apply_to_each')?['Email']}/mailFolders/Inbox/childFolders?$select=id,displayName&$top=100, I only get 2 child folders. Can someone please help, thanks a lot.

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11manish 3,347 on at

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The first thing to verify is whether the /childFolders response includes an @odata.nextLink property, as Graph uses pagination even when $top=100 is specified in some scenarios. If there is no nextLink, run the same requests in Graph Explorer to determine whether the discrepancy is coming from Microsoft Graph itself or from the Office 365 Users connector in Power Automate.
If Graph Explorer also reports childFolderCount = 42 but returns only 2 child folders, this may indicate a mailbox-specific or Microsoft Graph issue, and it's worth raising with Microsoft Support. If possible, also share a sanitized sample of the JSON response from both requests, especially the response headers and whether @odata.nextLink is present, as that will help pinpoint the cause.

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trannguyen0410 62 on at

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@11manish Thank you for the answer, I checked and there’s no @odata.nextLink in the output, there is "@odata.context", and then it just ends with "value". So I’m not sure what’s going on. I tried creating a subfolder in the Inbox and it worked, but when I’m testing with another user, it’s happening like that, and I’m testing with sharing email with permission.

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Valantis 6,778 on at

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Hi @trannguyen0410,

<cite index="60-1">By default, the /childFolders operation does not return hidden folders.</cite> That's your answer. The childFolderCount includes hidden system folders like Clutter, mail search folders, and Exchange internal folders, but your /childFolders call without the parameter only returns visible ones.

That's why you see 42 vs 2.

Add includeHiddenFolders=true to your child folders call:

https://graph.microsoft.com/v1.0/users/{email}/mailFolders/Inbox/childFolders?$select=id,displayName&$top=100&includeHiddenFolders=true

That should get you much closer to 42. The remaining difference (if any) might be deeply nested subfolders since childFolderCount only counts direct children at each level, not recursively.

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Valantis ✅ If this helped solve your issue, please Accept as Solution so others can find it quickly.

❤️ If it didn’t fully solve it but was still useful, please click “Yes” on “Was this reply helpful?” or leave a Like :).

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