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stima's avatar
stima
Copper Contributor
Oct 29, 2025

Skype For Business SE - persistent Chat

Hello,

maybe someone of you run into the same error and is able to help me on this topic:

 

we are using SkypeForBusiness only for internal communication

last week we have upgraded SkypeForBusinness 2019 to SE: "SkypeServerUpdateInstaller.exe" run without errors, installed the necessary updates and we were able to upgrade to SE on topology builder and publish the new version.

 

on the next step we tried to activate persistent chat.

so same procedure for the upgrade: start the update file "PersistentChatUpateInstaller.exe", nothing else to upgrade

 

the first steps (install new sql instance, configure topology builder, publish the new topology were easy, no issues occured.

but when we start the Deployment Wizard to install the necessary components we received the error:

"File not found trying to install installing c:\programdata\skype for business server\deployment\cache\7.0.2046.0\setup\mgcserver.msi (feature_chat_server)"

 

my question:

how can we install the necessary roles/components to activate persistent chat.

the file MgcServer.msi couldn't be found on the server, i can't find it on the SkypeForBusinnes 2019 ISO, too.

 

one version i found, was located on the ISO for SkypeForBusiness 2015 ISO, but this version can't be installed.

 

Thanks in advance,

 

best regards,

Markus

 

 

community
Deployment & Operations
Installation
Skype for Business Adoption

4 Replies

  • mhamer1020's avatar
    mhamer1020
    Copper Contributor
    Feb 03, 2026

    Were you able to find a resolution for this? 

    I find myself in the same spot. Fully patched, tried pulling the mgcserver.msi from a patched 2015 server in the environment to no avail. Running the PersistentChatUpdateInstaller.exe just gives me a blank window that doesn't list any products or updates the way the SkypeServerUpdateInstaller.exe will. Completely out of ideas at this point.

  • stima's avatar
    stima
    Copper Contributor
    Nov 20, 2025

    Hello Spisarau,

    thanks for answering.

    Yes, that was the statement so far. But there has been a change.
    According to an information from Microsoft, persistent chat should work with the SE version.

    https://learn.microsoft.com/en-us/skypeforbusiness/plan-your-deployment/persistent-chat-server/persistent-chat-server

  • Spisarau's avatar
    Spisarau
    Copper Contributor
    Nov 18, 2025

    Here is the answer to your question

    https://learn.microsoft.com/en-us/SkypeForBusiness/help-topics/2019/lscp/ms.lync.lscp.PersistentChatAddinMain

    • Filip_'s avatar
      Filip_
      Brass Contributor
      Dec 08, 2025

      This is not correct, PC is supported in 2019 and SE also.