Skip to main content
D
dresdenron
Inspiring
June 23, 2026
Answered

Acrobat is not responding and shows a running instance error in June 2026

  • June 23, 2026
  • 3 replies
  • 575 views

I am only using Adobe Reader and this problem just surfaced recently (I assume it has to do with a recent update). I can open the pdf files with MS Edge OK (which I don’t want to use). The error says “something went wrong” then it says “A running instance of Acrobat has caused an error”  when I try to open the pdf with Adobe Reader like I always have. It is on a WIN10 desktop. 

 

Ron 

    Correct answer Tariq Ahmad Dar

    Hello ​@dresdenron,

     

    Thank you for reaching out, and we are sorry to hear you are experiencing this.

     

    Please start by going to Help > Check for Updates in Adobe Reader, install any available update and restart your machine. This is the most effective first step as this error has been associated with specific versions.

     

    If the issue continues after updating, please run a Repair Installation by going to Help > Repair Installation, allow the process to complete and restart your machine.

     

    Also refer to help article for this error which includes additional troubleshooting steps: https://adobe.ly/4xKTDVf 

     

    Could you also share the following so we can assist further:

    • Your current Adobe Reader version under Help > About Adobe Reader

    • Whether this happens with all PDF files or specific ones

    • Whether the PDF files are stored locally or on a network or shared drive

    Please let us know how it goes and we will be happy to take it from there.


    ~Tariq

    3 replies

    B
    brunokern@web.de
    Participant
    July 23, 2026

    Probe Abo kündigen?  Aber wo?

    Amal Jaiswal
    Community Manager
    Amal JaiswalCommunity Manager
    Community Manager
    July 23, 2026

    Hi there 

     

    ++ Adding to the discussion 

    One more thing worth trying, open Task Manager (Ctrl + Shift + Esc), look for any background process named AcroRd32.exe or Acrobat.exe, and end those tasks before launching Reader again. A ghost process from a previous crash is often what triggers the "running instance" message even after a repair.

    Looking forward to hearing what version you're on, that'll help us narrow this down further.

    ~Amal

    T
    Community Manager
    Tariq Ahmad DarCommunity ManagerCorrect answer
    Community Manager
    June 24, 2026

    Hello ​@dresdenron,

     

    Thank you for reaching out, and we are sorry to hear you are experiencing this.

     

    Please start by going to Help > Check for Updates in Adobe Reader, install any available update and restart your machine. This is the most effective first step as this error has been associated with specific versions.

     

    If the issue continues after updating, please run a Repair Installation by going to Help > Repair Installation, allow the process to complete and restart your machine.

     

    Also refer to help article for this error which includes additional troubleshooting steps: https://adobe.ly/4xKTDVf 

     

    Could you also share the following so we can assist further:

    • Your current Adobe Reader version under Help > About Adobe Reader

    • Whether this happens with all PDF files or specific ones

    • Whether the PDF files are stored locally or on a network or shared drive

    Please let us know how it goes and we will be happy to take it from there.


    ~Tariq

    Firefly Community Gallery
    Adobe Firefly

    Remix with Firefly Community Gallery

    Thousands of free creations to fall in love with and remix in Firefly.

    Explore now
    Terms & ConditionsAccessibility statement
    Using the community Terms of use Privacy Cookie preferences Do not sell or share my personal information ad choicesAdChoices