DAC upgrade fail when upgrading from 25.11 DAC to 26.6 DAC

Topic

DAC Versioning Issue
When attempting to upgrade the DAC from the 25.11 version to the 26.6 version, the DAC upgrade fails.
The issue is caused by WiX detecting version 26.7.2511 as a newer version than 26.6.10000.2.

• The 25.11 DACs were incorrectly released with version 26.7.2511.
• The 26.6 DACs were released with version 26.6.10000.2.

As a result, WiX considers the 25.11 DAC version to be newer than the 26.6 DAC version, preventing the upgrade from proceeding.

Instructions 

First, uninstall the existing 25.11 DAC, and then install the 26.6 DAC.
Uninstalling the 25.11 DAC
Please perform the following steps:

1. Stop all Nintex services and related processes that are currently running.
2. Open Programs and Features.
3. Locate and select Nintex Dynamic Advanced Commands.
4. Right-click the application and select Uninstall.
5. Restart the RPA Server.
6. After the restart, verify that the DAC folders have been removed from the installation directory.
   
   Once the 25.11 DAC has been successfully uninstalled, proceed with the installation of the 26.6 DAC version.