Windows Defender App Control Custom OMA-URI

NMF 1

Is anybody else getting an error now when trying to create a custom WDAC configuration profile using a policy scanned from a reference computer? I am following the documentation here: https://learn.microsoft.com/en-us/windows/security/threat-protection/windows-defender-application-control/deploy-windows-defender-application-control-policies-using-intune

This worked spectacularly not more than ~4 weeks ago. Now I am greeted with an ugly red banner and this error: "Unable to save due to invalid data. Update your data then try again: The field Value must be a string or array type with a maximum length of '350000'."

At this point I can only get default policy xml binaries to work, all custom policies kickback the error above. I can't see anything that has changed in the documentation. Is anyone familiar with this feature? Thanks,

Crystal-MSFT 43,996 Reputation points Microsoft Vendor

2020-08-24T01:48:00.877+00:00
To check our issue, could you confirm the following information to us:

How many devices are affected? Did it affect all?

What are the OS version of these affected machines now? Has the version changed?

If we recreate the custom profile and deploy to the affected devices, will it work?

Is there any error under DeviceManagemnt Enterprise-Diagnostics-Provider event log?

Thanks!
Crystal-MSFT 43,996 Reputation points Microsoft Vendor

2020-08-26T07:19:41.563+00:00

How are things going? Could you provide the above information to us? if there's anything unclear, feel free to let us know.

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Windows Defender App Control Custom OMA-URI