Free Download Edius Project File. Last day, I encountered this error message while trying with a new software installation on my Windows 7 machine. Error 1500: Another installation is in progress.

You must complete that installation before continuing this one. Spent most of the time searching on the Internet but couldn't find a working solution. Later, I combined two solutions and it worked. Here is what I did. (You should have admin privileges on the system) Step 1: Open Windows Registry Editor by typing regedit.exe in Start>Run.

Another installation is already in progress. Type services.msc in start menu and hit enter to open Services Manager. Scroll down to the Windows Installer Service and double-click on it. Stop the Service and then restart it. Now try to install the program. It should help. Related read: There is a problem with this. I am unable to install Windows Updates as well as install. Description: Windows update could not be installed because of error 'Another installation is already in progress. Complete that. If you are running Windows XP or Windows Server 2003, you have to set the proxy settings.

Step 2: Go to the location: HKEY_Local_Machine Software Microsoft Windows Installer InProgress Step 3: You'll find that the value (Default) is filled with some data. Double click to open it. Empty the contents for that value. Step 4: Open Windows Services by typing services.msc in Start>Run Step 5: Find out the service named Windows Installer from the list of available services.

The service would be started and Startup Type will be Manual. Right-click the service, select properties and change Startup Type to Disabled. Click Apply and then OK. Step 6: Restart computer, after closing all the open windows.

Step 7: Once the system is up after restart, open Services, and change the Windows Installer Startup Type to Manual (You Disabled it in Step 5). Click Apply and then OK. Now, you'll be able to install any software that failed Error 1500. UPDATE: An alternate method. Delete the Key: HKEY_Local_Machine Software Microsoft Windows Installer InProgress Open [Task Manager >>Processes] Check 'Show processes from all uses' Find the process (might occur more than once), right click and select 'End Process'. Click Yes for Warning prompt.