SfB Server 2015: SIP/2.0 503 Service Unavailable

While working on a PSTN integration with Skype for Business Server 2015, we notice that the inbound calls were being rejected immediately with SIP/2.0 503 Service Unavailable: TL_INFO(TF_PROTOCOL) [festd\festd]6984.23A4::03/06/2017-22:56:29.167.0000245B (S4,SipMessage.DataLoggingHelper:sipmessage.cs(801)) [4223311279] >>>>>>>>>>>>Outgoing SipMessage c=[<SipTcpConnection_1ACDDA8>], 172.20.20.40:5068->172.20.15.39:56945 SIP/2.0 503 Service Unavailable FROM: "Joule Adams"<sip:09920156101;phone-context=PrivateUnknown@recore.lab;user=phone>;tag=f0d14b5566;epid=8CE36BBBAB TO: <sip:+449920207101@172.20.20.40;user=phone>;tag=9837f16c5d;epid=14123C3787 CSEQ: 12538 INVITE CALL-ID: 49bfd2ea-8753-4651-a8aa-d7b48d066d93 VIA: SIP/2.0/TCP 172.20.15.39:56945;branch=z9hG4bKdab2e468 CONTENT-LENGTH: 0 SERVER: RTCC/6.0.0.0 … Continue reading SfB Server 2015: SIP/2.0 503 Service Unavailable

Lync Server: Event 41029 LS Data MCU – No connectivity with the Lync Web App

In a recent support case we were working on an issue where sometimes the users couldn't use the Lync Web App. The troubleshooting started in the Event Viewer > Lync Server, we notice that we had a few errors: Log Name: Lync Server Source: LS Data MCU Date: 01/03/2017 15:00:43 Event ID: 41029 Task Category: (1018) Level: … Continue reading Lync Server: Event 41029 LS Data MCU – No connectivity with the Lync Web App

Cannot Sign-in to Office 365 in SfB Control Panel – Exception of type ‘Microsoft.LiveID.IDCRL.IDCRLException’ was thrown

In a new Skype for Business Server 2015 lab we tried to sign-in to Office 365 in the Skype for Business Control Panel: But after a few seconds we got the following error message: We couldn't log in to your Office 365 account. Please check the errors and then select OK to try again: Get-CsWebTicket: Exception of … Continue reading Cannot Sign-in to Office 365 in SfB Control Panel – Exception of type ‘Microsoft.LiveID.IDCRL.IDCRLException’ was thrown

Missing Kerberos Account Assignments after SfB Server 2015 In-place Upgrade

Recently we were asked why in a multi site deployment the Kerberos Account Assignments disappeared on a global level, after a single site performed an In-Place Upgrade to Skype for Business Server 2015. When we look at the planning details for the In-Place Upgrade to Skype for Business Server 2015, it mentions that we need to have additional considerations … Continue reading Missing Kerberos Account Assignments after SfB Server 2015 In-place Upgrade

PSScript: Lync/SfB Server Certification Store Validation

In a previous post, we published the checks/validations that we should do in the Certification Store in the Lync/SfB servers. Checks to do in the Lync/SfB Certificate Store We decided to write a PowerShell with all these checks to make it simple to use. The script will be kept in sync with the post, meaning that … Continue reading PSScript: Lync/SfB Server Certification Store Validation

Lync Server 2013: Update ‘Windows Fabric Patch’ could not be installed. Error code 1603

In August 2014, an update to Windows Fabric was included in the Lync Server 2013 Cumulative Update. There's a list for the Windows Fabric updates: Lync/SfB: Windows Fabric version List During an update in our Lab, we got the following error message: Also, an error was logged in Event Viewer: Log Name:      Application Source:        MsiInstaller … Continue reading Lync Server 2013: Update ‘Windows Fabric Patch’ could not be installed. Error code 1603

Lync/SfB Server: Checking for duplicate entries in the Active Directory Configuration Partition

While troubleshooting the issue described in Checking for "ms-RTC-SIP-TrustedServer" multiple Active Directory entries with PowerShell, we encountered more duplicates for the same server, so we decided to compile all in one place. Like in our previous post Checks to do in the Lync/SfB Certificate Store, this list will also be updated and, again, you are … Continue reading Lync/SfB Server: Checking for duplicate entries in the Active Directory Configuration Partition