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autorun.hta is not a valid win32 application

Issue: When Microsoft Dynamics AX 2012 R3 setup by double clicking setup.exe to install AX from DVD or Image ISO file error comes as “autorun.hta is not a valid win32 application”

AX Version: Microsoft Dynamics AX 2012 R3
OS: Microsoft Windows Pro 7 /  Microsoft Windows Server 2012 R2
SQL: Microsoft SQL 2014

Solution:

Go to Control Panel – Programs – Default Programs – Associate a file type or protocol with a program.

Locate the .hta extension and make sure it is associated with the Microsoft (R) HTML Application host application. You can change this by clicking the Change program button.

The following screenshot shows the correct setup for the .hta extension.

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