Merge certificate public and private key with OpenSSL

This post isn't about Lync Server/Skype for Business Server, but we think it will be a good reference for people that work with Lync/Skype. When we do an offline certificate request, we will get an .REQ file that looks like this: -----BEGIN NEW CERTIFICATE REQUEST----- ################################### -----END NEW CERTIFICATE REQUEST----- Then we use public or private CA … Continue reading Merge certificate public and private key with OpenSSL

Request/Renewing Skype for Business Server 2015 Certificates

Here are the steps to request or renew certificates in Skype for Business Server 2015. Most of the steps are similar to Lync Server 2010/2013, so to start let's go to the well-known Deployment Wizard Step 3 and click Run or Run Again (depending on if you are requesting for the first time or renewing … Continue reading Request/Renewing Skype for Business Server 2015 Certificates

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 Server Source: LS Certificate Manager Date: 06/10/2014 02:29:30 Event ID: 31007 Task Category: (1016) Level: Warning Keywords: Classic … 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-2014-3566 http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2014-3566 This POODLE … Continue reading Disabling SSL 3.0 in Lync Server 2013 and Skype for Business Server 2015

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)

AudioCodes 420HD – Failed to validate server

AudioCodes 420HD can be a good replacement for Lync Phone Editions, at least regarding its price. However, don't expect to have all the features that exist in the Lync Phone Editions. In addition, AudioCodes has already promised to enable Better Together over Ethernet to 420HD, 430HD and 440HD in a future firmware release. The provisioning of these phones is … Continue reading AudioCodes 420HD – Failed to validate server