Deploying Kemp Technologies Free LoadMaster as Load Balancer and Reverse Proxy

Update 2017/06/07 – Updated the screenshots with the new Kemp LoadMaster UI. In a recent Lync deployment, we were installing a new Kemp Technologies LoadMaster and a new license type was shown: This is great news since we can use it for test/lab environments without having the previous 30 days limitation. Also, in the End … Continue reading Deploying Kemp Technologies Free LoadMaster as Load Balancer and Reverse Proxy →

The address ‘LyncEnterprise-ApplicationAccount@…’ isn’t a valid SMTP address

Integrating Lync Server 2013 and Exchange 2013 is usually a relative straight forward process. We just need to follow the steps described here: Integrating Microsoft Lync Server 2013 and Microsoft Exchange Server 2013https://technet.microsoft.com/library/jj688098.aspx One of these steps is to run the script Configure-EnterprisePartnerApplication.ps1 on a Exchange PowerShell. This script will create a User and the Lync Server partner … Continue reading The address ‘LyncEnterprise-ApplicationAccount@…’ isn’t a valid SMTP address →

Lync/SfB Server: Event 31137,31138 LS Response Group Service

These are common warnings and usually associated with issues such as disabled AD account or user removed from Lync Server: Log Name: Lync ServerSource: LS Response Group ServiceDate: 22/12/2014 19:32:15Event ID: 31137Task Category: (2001)Level: WarningKeywords: ClassicUser: N/AComputer: ************Description:During the Active Directory update non-SIP enabled agents were found. The following users are specified as agents, but are … Continue reading Lync/SfB Server: Event 31137,31138 LS Response Group Service →

Lync Server Component Version using PowerShell (Windows Registry)

One of the first posts was about how to get Lync Server Component versions: Lync Server Component Version with PowerShell (WMI Classes) In that post, we used Get-WmiObject to query the server. Nevertheless, using that method can be slow, and for sometime it was the only one we knew. In the post Hey, Scripting Guy! Blog … Continue reading Lync Server Component Version using PowerShell (Windows Registry) →

Lync Server 2013: Event 31007 LS Certificate Manager

It is really important to regularly check the Event Viewer for Warnings/Errors (or to use System Center Operation Manager to do it for you). In one of these checks, the following event was found: Log Name: Lync ServerSource: LS Certificate ManagerDate: 06/10/2014 02:29:30Event ID: 31007Task Category: (1016)Level: WarningKeywords: ClassicUser: N/AComputer: ******Description:The CRL could not be … Continue reading Lync Server 2013: Event 31007 LS Certificate Manager →

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-2014-3566http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2014-3566 This POODLE bites: exploiting … Continue reading Disabling SSL 3.0 in Lync Server 2013 and Skype for Business Server 2015 →

Lync Client 2013 Tab Shortcut Keys

Most users already use shortcut keys on daily basic tasks, such as working on documents/spreadsheet, browsing the Internet, etc., and these shortcuts are also heavily used for playing PC games (specially strategy games). If you want to get familiar with all the available Lync Client 2013 shortcuts, check the following URL: Keyboard shortcuts for Lync Client 2013http://office.microsoft.com/lync-help/keyboard-shortcuts-for-lync-HA102927994.aspx … Continue reading Lync Client 2013 Tab Shortcut Keys →

Lync Server 2013: Event 32169 LS User Services and Event 36870 Schannel

Last Tuesday, a friend called us asking if we could help him check one Lync Environment, because on a Front End server the Lync service wouldn't start. This particular environment was familiar to us since we were part of the team that deployed it, so we knew it has only two Front End Servers. Even … Continue reading Lync Server 2013: Event 32169 LS User Services and Event 36870 Schannel →

Certificate re-key to change signature algorithm in Lync Server (SHA-1 to SHA-2)

Recently, I received an e-mail from GoDaddy asking to renew older certificates which were signed using SHA-1 algorithm because: Google® is making a shift in their Chrome™ Web browser to phase out any SSL certificates which use an old encryption algorithm (SHA-1) and expire after Dec. 31, 2015 By default, all new or recently renewed certificates … Continue reading Certificate re-key to change signature algorithm in Lync Server (SHA-1 to SHA-2) →

Blocking Calls on Lync Server and Skype for Business Based on Caller ID

Update 2016/04/01 - To avoid Missed call notifications check Missed call notification when the call is blocked by CallerIDBlock MSPL Script Last week a customer asked how we can block calls in Lync Server. After some searching, I found the following post: VoIPNorm's UC Blog - Blocking Calls in Lync Based on Caller ID Unfortunately, the comments refer … Continue reading Blocking Calls on Lync Server and Skype for Business Based on Caller ID →