The File Extensions Database


.ISL File Extension

  • Developer by: Flexera Software, Inc.
  • Category: Temporary Files

What is an .ISL file?

.ISL is InstallShield temporary installer file format

File extension isl is associated with the InstallShield an application installation development tool for Microsoft Windows operating system developed by Acresso (now Flexera).

A typical .isl file contains temporary installer data used by InstallShield.


How to open:

The isl files are used for internal purposes of InstallShield.

How to convert:

It does not seem to be possible to convert this type of .isl file to any other format.

How to solve problems with ISL files

  • Associate the ISL file extension with the correct application. On :
    Windows: Right click on any ISL file and then click "Open with" > "Choose another app". Now select another program and check the box "Always use this app to open *.ISL files". Mac: Right click (or Ctrl-click) the ISL file, then click "Open with" > "Other...". Then choose another program and check the "Always Open With" box. Linux: Right click on the file, and select "Open with" and choose another program. iPhone: Tap the file. If you do not see an app to open the file, then tap Share "Share" and choose an app. Alternatively, save the file. Then open the Files app Files app. There long-press on the file, then release your finger. You will see a black menu bar. Then tap "Share" and select an app. Android: Tap the Settings icon on your smartphone, then tap on the Apps section. There tap the Options icon in the top right-hand corner of the screen to change the default apps.
  • Update your software that should actually open .ISL is InstallShield temporary installer file format. Because only the current version supports the latest ISL file format. Search, therefore, e.g. on the Flexera Software, Inc. manufacturer website after an available .ISL is InstallShield temporary installer file format update.
  • To make sure that your ISL file is not corrupted or virus-infected, get the file again and scan it with antivirus software.