skype for business on prem. Conference ID issue for a single users

Hi Experts,

One of my customers is having some trouble with her Skype conferences.

When joining by phone and entering the conference id, the automated system states, ”Sorry, I cant find a meeting with that number.”

Any ideas as to why this may be happening with her conferences and what I may do to do troubleshoot?

My customer runs a SFB on prem with several from end servers and back end servers. Exchange 2016 with several mailbox servers in a DAG. Active directory single forest/single domain with multiple sites.
Jerry SeinfieldAsked:
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Satyendra SharmaMicrosoft UC Technical ArchitectCommented:
Hello,

Couple of things to check:
1.  Are your sfb servers up to date on patches?
2.  Does the conferencing policy change on the affected user? (ensure conference policy has dialin conferencing enabled)
3.  Can users join the meeting internally by clicking the meeting url?

If for some reason the conference policy was changed on this user to a policy that has dialin conference enabled to not enabled and switched back to a policy that has dialin conference enabled.  This results into the conference ID change and the user will get a new conference ID assigned.  If this is the situation then you will have to run MMT on the affected users system to update all the previously scheduled Skype meetings, this tool will send out an update to all the attendees with the new Skype bridge info.

https://www.microsoft.com/en-us/download/details.aspx?id=51659

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