Microsoft Graph change causes Microsoft 365 and Microsoft Hybrid license operations to fail

Symptoms

• An operation prompts a Microsoft Graph error, either as a pop-up or in a Business Rule execution report:

  Target system reported an error. Message: This resource does not support custom page sizes.
  Please retry without a page size argument.. Http status: BadRequest.
  Details: {"error":{"code":"Request_UnsupportedQuery","message":"This resource does not
  support custom page sizes. Please retry without a page size argument.", ... }}

• Web Portal M365 user query searches fail and return the following error:

  Request_UnsupportedQuery
  This resource does not support custom page sizes.
  Please retry without a page size argument.

Affected functionality and versions

Cayosoft Administrator v13.1.1 and v13.2.1 are confirmed to be affected. Earlier versions of Cayosoft Administrator using the Microsoft 365 or Microsoft Hybrid extensions are affected in the same way due to the nature of the external cause. Migrating to an earlier version does not resolve the issue.

Any operation that uses tenant subscription and license plan data can fail. Refer to the list of functionality confirmed to be affected:

• License Options in Enable Mailbox and New User with Linked Mailbox — the dialog does not open; no license options are listed.

• Update License Cache in the Cayosoft Administrator console — the license cache is not refreshed.

• Microsoft 365 Users | Revoke Deleted Users Assigned Licenses rule — the rule prompts the error and does not revoke licenses. The report shows 0 objects processed and 1 error.

• Analytics collection | Microsoft Office 365 and Analytics collection | Collect Additional Data rules — no license data is collected.

• Web Portal M365 user queries — cloud queries may fail with the reported error.

Cause

Microsoft Graph publishes metadata that describes which query options each of its resources supports, including whether a resource accepts a custom page size when results are returned in pages. Cayosoft Administrator reads that metadata to build valid requests.

Microsoft stopped publishing that metadata for subscribedSkus, the Microsoft Graph resource that holds your tenant's subscription and license plan information. Cayosoft Administrator retrieves collections page by page, and without the metadata it had no way to know that subscribedSkus is one of the resources that reject a custom page size. It kept requesting a page size, and Microsoft Graph rejected the request. Microsoft treats changes of this kind to its beta endpoint as non-breaking and does not announce them, so there was no advance notice.

No changes occurred in your environment or Cayosoft Administrator. Operations that had been working began to fail due to the change introduced by Microsoft.

Resolution

NOTE: You can set the update channel to Early adopters to receive the v13.2.2 upgrade on August 20th in the Product Update | Check, notify and schedule updates rule. After the upgrade, you can set it back to Mainstream. We recommend Mainstream as your permanent update channel.

Upgrade to the v13.2.2 release or newer version of Cayosoft Administrator. Cayosoft Administrator v13.2.2 will become available on August 20th, 2026 via the Early adopters update channel and on August 25th, 2026 via the Mainstream update channel.

Starting v13.2.2 release, Cayosoft Administrator no longer depends on the Microsoft Graph metadata that Microsoft withdrew. subscribedSkus returns the tenant's full subscription and license plan list in a single response, so pagination is not required. Cayosoft Administrator now requests it without a page size, which Microsoft Graph accepts regardless of what its metadata publishes, so the same withdrawal cannot break these operations again. The change covers every affected operation, including the license revocation and analytics collection rules.

For any questions, please contact Cayosoft Support.