MS Teams Auditing for IT Pros – “Easymode”

I bring you a best practice that we often use in testing environments but can prove valuable in production as well. The idea is to create an Alert Policy for all (or some) Microsoft Teams operations. This is great if you want to monitor Microsoft Teams management easy and quickly without having to go through… Read more

Issue with Presence and IM on Federation when having a side-by-side tenant and Skype for Business on premises deployment

Recently there have been quite a few reports by customers who have issues with Presence and IM while Federating with other organizations. One of the most common scenarios, related to this phenomenon, is tied up with tenants being part of the communication path between the two organizations. Usually, there is a tendency to ignore the… Read more

“Cannot find the location of the Central Management Store in Active Directory” error on your Skype For Business Pool

Recently I faced an issue in which when trying to execute any command related to the CMS on an Enterprise Pool, I was getting the same error or a blank result: “Cannot find the location of the Central Management Store in Active Directory” The situation was worrying me because Skype For Business Server was not… Read more

How to reboot your Lync/SfB Servers without breaking the Quorum.

More than once the situation when I’m asked how we should really reboot a server in a pool minimizing the impact for the end users, and not breaking the Server Quorum, Fabric Service and Routing Groups currently in use. Before proceeding, it’s important to always take in consideration our Technet Article about High Availability. There, you… Read more

The user Accounts in Outlook and SfB do not match error when scheduling a Skype For Business Meeting from Outlook.

Even if there is many information about this error, recently I’ve faced a very interesting situation in an Exchange Hybrid + Skype For Business Environment in which the users were configured with a different Mail Address (SMTP), Skype Address (SIP) and User Principal Name (UPN). The issue: When trying to schedule a meeting on Outlook,… Read more

Lync/Skype4B: How to Disable "Edit or Remove Picture" option.

Recently, we were contacted by a customer with an uncommon request: How to disable the button Edit or Remove Picture from the Lync/Skype4B Client? Most people want to know how to enable this option, which belongs to a feature called: High Resolution Photos only available through Exchange Web Services connectivity between Lync Server 2013/Skype for Business Server… Read more

Checks to do in the Lync/Skype for Business Server Certificate Store

The checks described in this article are the result of what we normally check during troubleshooting. Some of these already have specific error events, but the objective here is to try to avoid that these events occur. We plan to keep the post updated and add more checks that we identify as useful. Also, we… Read more

Disabling SSL 3.0 in Lync Server 2013 and Skype for Business Server 2015

If you recently tried to check on a certificate on DigiCert – SSL Certificate Checker (https://www.digicert.com/help/), you may have noticed the following warning:   DigiCert added this verification due to a vulnerability that was discovered a few days ago. For more information about this vulnerability, check the following articles: Vulnerability Summary for CVE-2014-3566 http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2014-3566 This POODLE… Read more

Unable to resolve DNS SRV Record – 404 Not Found and 504 Server time-out

This issue might happen with Skype federation (PIC) or OCS/Lync federation. It’s a simple issue, but directly related to an incorrect configuration that we saw some customers doing. Don’t forget that Lync Server has ports requirement so that federation can work correctly. We can check these requirements on the following TechNet article: Port summary – Single consolidated edge with private… Read more

“No match for domain in DNS SRV results” – Federation to additional SIP Domain

We have to be extra careful when we deal with additional SIP domains and we want these domains to be able to communicate to federated partners. Most of the deployments only have DNS records for the main SIP domain, and because of this the federation for the additional domains won’t work. For example, if we have sip.contoso.com and… Read more