Forum Discussion
Teams Diagnostic code 500/16825
TomArbuthnot
1. Unfortunately its of all users in that federation. They are all Skype users. In my admin center we have activated the "Allow users in my organization to communicate with Skype users." option.
2. Yes similar to the screenshot above the external users can even contact me, but I cannot answer.
With other external users / service providers we don't have any issues. I will DM my contacts with you for federation check.
- We are having same/similar issue with a customer we are deploying Teams for. If you have any details to share, will be much appreciated.
Customer is moving from onprem sfb to Teams. Sometimes users trying to IM between onprem sfb and teams user, getting the same error/behavior- So far I haven't found the correct person on the sfb end to try different configurations.
Personally my assumption is that the users might not be fully migrated from sfb on prem to teams yet.
To be honest with sfb online breaking away now, I am not sure what the croorect migration path would be.
I'll keep you updatedt once I have been in contact with the sfb admin on the onther end. - If you are mid migration and or a Teams admin you could raise a ticket with MSFT re the issue
Do you own both the teams config and the SfBS config?
If the end state is to get to 100% teams in a reasonable time it might be worth living with the pain, but if you are saying Teams/SfBS for a while worth trying to hunt down the issue
Did you ever get a fix or an root cause for this please as i am experiencing the same issues between SFB2015 and Teams TomArbuthnot
- In our case, we believe it was some type of deep packet inspection running on a firewall but we don't have exact proof since the customer decided not to troubleshoot this any further. From sfb CLS logs and wire shark on edge servers we saw the following:
In a bad example (with Diagnostic code 500/16825) we are not getting "ACK" message from Microsoft 365. Comparing it to a good IM example, we do get "ACK" message but there is still a 14 second delay sometimes.
This makes us think there is possible packet inspection going on on firewall side but we didn't have access to firewall to check that.I'm currently looking at a similar issue.
Tenant 1 is Teams Only (upgrade from hybrid Skype for Business) - unable to communicate with multiple external Skype for Business estates.
Tenant 2 is Teams Only - able to communicate with the above external Skype for Business estates.
I'm performing the Tenant 1 and Tenant 2 tests from the same machine/network. Microsoft say the issue is with the external Skype estate(s). Sounds like a config issue with Tenant 1?
