Upgrade Exchange SP1 to CU23 RRS feed

  • Question

  • Hello all,

    I have exchange server 2013 sp1, i need to upgrade it to CU23. Can i do it directly or i have to do intermediate upgrade first.

    Exchange OS: 2012r2

    AD OS: 2012r2

    Forest\ domain function levels: 2008

    I need also to install exchange 2019 cu9 "coexistent" for awhile and migrate all mailboxes to exchange 2019. should i upgrade current forest\ domain function levels or it gonna work.

    for exchange 2019 cu9, what IE or chrome version should i use (install or update to latest version)

    Thank You

    • Edited by IICO2022 Monday, January 4, 2021 6:45 PM
    Monday, January 4, 2021 6:33 PM

All replies

  • forum migrated to mentioned below link


    please marked as answer if issue resolve

    Monday, January 4, 2021 7:53 PM
  • Hi,

    Actually this forum is meant for developing issues about Exchange. For Exchange general questions, the previous TechNet forums have been migrated to a new home on Microsoft Q&A. We have created a copy of it on Microsoft Q&A Platform: Upgrade Exchange SP1 to CU23

    Kindly register the Microsoft Q&A Platform and continue the discussion out there with us.



    Please remember to mark the replies as answers if they helped. If you have feedback for TechNet Subscriber Support, contact:tnsf@microsoft.com.

    Tuesday, January 5, 2021 8:30 AM