Matt Ellis

Exchange UM: “Sorry, a system error has occurred.”

Posted by in Exchange, Lync, OCS

Today our UM server suddenly started giving an error when people tried to leave a voicemail. The error said: “Sorry, a system error has occurred. Please try again later.” No changes had been made to Lync or the UM environment for sometime. In the event log I noticed the following events: Event 1078, MSExchange Unified Messaging Event 1159, MSExchange Unified MessagingThe key piece of information here is the Unable to load DLL ‘WMVCore.dll’: The specified module could not be found. (Exception from HRESULT: 0x8007007E) error. A quick Google of the WMVCore.dll error revealed that…read more

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Decommissioning OCS – Lessons Learned…

Posted by in Lync, OCS

I have recently spent some time decommissioning our legacy OCS 2007 R2 servers and pools from our Lync 2013 environment. I thought I’d put a few hints and tips together as a guide for others that have to do it. This basically covers the stuff I had to spend time figuring out. Hopefully it helps people not to have to spend time on it… First off, I generally followed the procedures outlined on TechNet. The only problem I found with TechNet is that there are a few places where it…read more

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Communicator 2007 R2: Call-Forwarding Settings are unavailable…

Posted by in OCS

I implemented Enterprise Voice for OCS 2007 R2 the other day. When the TelephonyMode was changed to enable Enterprise Voice in my Communicator client I realised I was unable to change any of the Call-Forwarding settings. Not only this but I realised that no matter what machine I logged onto I had this issue. It was definitely not down to the version of Communicator as I was using the latest version. I then noticed that if someone else logged onto my machine it worked fine. It was something specific to my user…read more

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OCS multi-party video conferencing not working (peer to peer is fine)…

Posted by in OCS

I was recently asked to help out with an OCS video conferencing issue whereby peer-to-peer video was working fine but as soon as a third person was added to the session making it a conference the following error occurred: Cannot perform the selected action. This action may not be permitted by the conferencing service. Please try again. If the problem persists, please contact your system administrator. Not the greatest error I’ve ever seen. Multi party video conferencing should work out of the box with OCS so I suspected firewall policy…read more

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Out Of Office (OOF) note not displaying correctly in Communicator

Posted by in OCS

I stumbled upon a little problem the other day when I was asked to change someone’s Out Of Office (OOF) message. After doing this I was notified that the OOF note showing in Communicator had not changed. After troubleshooting a perfectly working Exchange availability service for an hour I found out that this is by design. Took a bit of searching but found the following information on this page: http://office.microsoft.com/client/helppreview.aspx?AssetID=HA102067221033&ns=COMM2007&lcid=1033 The Out of Office note will replace any Personal Note you have previously entered, but the Out of Office note will not be updated until you…read more

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Communicator for Mac fix for Lion…

Posted by in Lync, OCS

For those of you disappointed when Lion came out to find that anything later than version 13.0.0 of Communicator for Mac was basically unable to do anything (and I mean, anything) on Apple’s new OS, there is finally a fix from Microsoft. Get it here: http://www.microsoft.com/download/en/details.aspx?id=26835

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