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Is there a way to install two versions of AcumaticaERPInstall.msi simultaneously?

  • May 25, 2025
  • 3 replies
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Captain II
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      I need to maintain two versions of Acumatica simultaneously. I noticed that when installing AcumaticaERPInstall.msi, the new version will default to overwriting the old version. Additionally, after installing the new version, attempting to install the old version results in an error. (I’m not sure if uninstalling the new version and then installing the old version will cause issues—can someone let me know?)

       My key question is: Is there a way to install two versions of AcumaticaERPInstall.msi on the same computer, so that I can have two Wizards available simultaneously?

Best answer by aaghaei

You can have as many as instance but you will need to install them in different folders. First unpack the .msi file to a temp folder(s) for each version something like

msiexec /a c:\path\24R2.msi /qb TARGETDIR=c:\path\target\24R2
msiexec /a c:\path\23R2.msi /qb TARGETDIR=c:\path\target\23R2

This can be even for different builds of the same major version but above I am providing example of 23R2 and 24R2.

Then from the data folder of the extracted files using the Acumatica Config install the desired version.

repeat the pattern. I have multiple versions installed this way but if you do coding and debugging you potentially will have some issues with tracing.

robk20

3 replies

aaghaei
Captain II
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  • aaghaei
  • Captain II
  • Answer
  • May 25, 2025

You can have as many as instance but you will need to install them in different folders. First unpack the .msi file to a temp folder(s) for each version something like

msiexec /a c:\path\24R2.msi /qb TARGETDIR=c:\path\target\24R2
msiexec /a c:\path\23R2.msi /qb TARGETDIR=c:\path\target\23R2

This can be even for different builds of the same major version but above I am providing example of 23R2 and 24R2.

Then from the data folder of the extracted files using the Acumatica Config install the desired version.

repeat the pattern. I have multiple versions installed this way but if you do coding and debugging you potentially will have some issues with tracing.

Reza Aghaei CPA, M. Acc. & Acumatica Customization - If a member helped you, please *Like* their post. If a member provided an answer to your question, please mark it as *Best Answer*.
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Chris Hackett
bcoutermash09
Jr Varsity III
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  • bcoutermash09
  • Jr Varsity III
  • May 25, 2025

This blog also has a walk-through: https://blog.zaletskyy.com/post/2024/12/30/installation-of-multiple-acumatica-versions-a-handy-msi-trick

Brittany Coutermash
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Chris Hackett
R
Captain II
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  • ray20
  • Author
  • Captain II
  • May 25, 2025

​@aaghaei ​@bcoutermash09 Thank you , both of you solved my issue. 

Chris Hackett
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