Error 1500 mostly appears when you try to install or run MS Office program. This error occurs in all major versions of Microsoft Windows including Windows 7, Vista and XP. Error appears like this:

“Error 1500. Another installation is in progress. You must complete that installation before continuing this one.”

Solution

Install the Program in Safe Mode

Install Microsoft Updates

Remove Junk Files

Install Programs Independently

Fix Registry Problems

Install the Program in Safe Mode

If you are facing problems in installing MS Office in normal Windows mode and your PC is generating error 1500 try installing the program in Safe Mode. To do so follow the steps given below:

Restart your computer

Press F8 instantly 3-4 times

From the menu select the option Safe Mode with Networking and press Enter

Logon as an Administrator

Run the MS Office setup file to install the program

Install Microsoft Updates

If you are trying to install MS Office in a computer which is not updated with the latest Windows updates it may generate error 1500. To fix this issue you need to download and install latest Microsoft updates. To do so follow the steps below:

Open Control Panel

Click on Windows Update

Click Check for Updates in the right menu

Install updates

Restart your computer

Remove Junk Files

If your system contains junk files it may prevent you from installing MS Office program on your computer. Simple solution to this problem is to remove all the junk files from your computer to get rid of error 1500. You can safely remove junk data from your computer and web browsers manually as well as automatically. Manual process might take a little time, therefore, it is recommended you choose a good system utilities software which contains the feature of system cleaner which can easily wipe out junk data from your system.

Install Programs Independently

Error 1500 also appears when you try to install 2 programs simultaneously Windows prevent you from doing so. It is recommended that you should complete the installation of one program and then try to install other program to avoid errors.

Fix Registry Problems

If Windows registry somehow gets corrupt it may not allow you to install the MS Office software. You won’t be able to install the program until you don’t repair registry.

Easy way of repairing Windows registry is to download and install a registry cleaner program. It allows you to repair problematic registry keys in just a few clicks. It scans registry deeply and fixes all kinds of errors.

To quickly fix error 1500 you can use the Mcafee Secured tool RegInOut here: Fix Error 1500.