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In the right pane of the Registry Editor, double-click on the (Default) registry string value to modify.Click on the InProgress sub-key under the Installer registry key in the left pane of the Registry Editor to have its contents displayed in the right pane.
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HKEY_LOCAL_MACHINE > Software > Microsoft > Windows > Installer
#INSTALL REALTEK HD AUDIO DRIVER FAILURE 0X000000FF INSTALL#
However, an installation may sometimes fail to remove the active installation status reference from the Registry, and this can lead to the user seeing Error 1500 the next time they try to install a program on their computer. When an installation is in progress, an active installation status reference is added to the computer’s Registry, and this reference is removed once the installation finishes.
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Solution 3: Delete any active installation status references from the Registry Try running the installation that was affected by this problem once again, and the application should be successfully installed on the computer this time.Once the processes have been forcefully terminated, close the Task Manager.One by one, locate and click on as many of the following processes as you can find in the list of running Background processes to select them, and click on End task:.In the Task Manager, navigate to the Processes.Press Ctrl + Shift + Esc to launch the Task Manager.If residual background processes from previous program installations are causing this problem, you can fix it by simply closing the offending background processes in the Task Manager. The Error 1500 error message can be triggered by lingering background processes from installations that were previously running on the affected computer.
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