Warning in Event Viewer from Work Folder setup logged every few minutes: Event 13007

[Gregg Cooper]

Hi,

I am using work folders and have it available externally via AAD Application proxy. Everything is working fine with the setup. Sync works fine on both domain joined and stand alone machines whilst not on site.

But this warning keeps getting logged every few minutes. I have an idea what it means, but I dont know why its happening, or how to fix it. Hopefully someone here can shed some light.

Event 13007, Microsoft- AAD Application Proxy Connector

The HTTP response from the backend server was not received within the expected interval. Expected interval: 85 seconds.

Details:
Transaction ID: {05b29479-d078-465e-a003-f43da21acf9e}
Session ID: {05b29479-d078-465e-a003-f43da21acf9e}
Published Application Name:
Published Application ID:
Published Application External URL: https://workfolders-xxxxxxxxx.msappproxy.net/
Published Backend URL: https://workfolders.xxxxxxxxx.uk/
User: xxxxxxxxx@xxxxxxxxx.uk
User-Agent: MS_WorkFoldersClient
Device ID: <Not Applicable>
Token State: NotFound
Cookie State: NotFound
Client Request URL: https://workfolders-xxxxxxxxx.msappproxy.net/sync/1.0/changes
Backend Request URL: https://workfolders.xxxxxxxxx.uk/sync/1.0/changes
Preauthentication Flow: PassThrough
Backend Server Authentication Mode: WIA
State Machine State: BERequestWriting
Response Code to Client: <Not Applicable>
Response Message to Client: <Not Applicable>
Client Certificate Issuer: <Not Found>
Response Code from Backend: <Not Applicable>
Frontend Response Location Header: <Not Applicable>
Backend Response Location Header: <Not Applicable>
Backend Request Http Verb: HEAD
Client Request Http Verb: HEAD


Ive removed all identifiable information. Hope that doesn't impede finding the issue.

Thanks in advance

Gregg

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