SOLVED: Installation Error Code 2502 & 2503

UPDATE: March 2017: If the easy command line path solution does not solve your issue, check out https://www.urtech.ca/2016/02/solved-how-to-fix-error-2503-2502-on-windows-10-when-installing-software/

I was recently working on a Sophos encryption install on a Surface Pro 3 but was presented with “Error code 2502” followed by “Error code 2503” .  Sophos was not helpful with thisinstallation-error-code-is-2502-2503-internal-error-2503 but I found that the problem is not unusual in Windows 8.1 machines and it has an easy work around.

You need to not use, or to elevate EXPLORER.EXE.  The two easy ways to do this are:

Don’t use Explorer.exe

  1. Click Start and find CMD
  2. Right click on and RUN AS ADMINISTRATOR
  3. Type in the path to your MSI and press enter

Elevate Explorer.exe

  1. Click Start and find CMD
  2. Right click on and RUN AS ADMINISTRATOR
  3. Type TASKMGR
  4. End Task on EXPLORER.EXE
  5. Click FILE, NEW-TASK (RUN)
  6. Enter EXPLORER.EXE
  7. Using COMPUTER or THIS PC, find the program you want to install and double click on it
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Comments

  1. tommy lopez July 31, 2018 at 1:17 am

    This did not work. Any other help would be appreciated.

    • Ian Matthews
      Ian Matthews August 28, 2018 at 6:46 pm

      What happened why you elevated Explorer? What was the specific error?

  2. Tqke0 November 17, 2017 at 7:44 pm

    thank you so much, really helpful

  3. yoav October 5, 2017 at 6:50 am

    thank you so much, really helpful.

  4. Ramona Miller May 8, 2017 at 4:26 pm

    I just performed the “elevate explorer.exe”. I was able to install the program!!! Thank you so much. Microsoft should visit your website, as they offered no viable solution.

    Sincerely,
    Ramona Miller
    Virginia Beach VA

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