Installing Two Office Suites on the Same Computer to Avoid Conflict

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Ngày cập nhật gần nhất: 15/4/2026

Have you ever tried installing two Office suites on the same computer? The following article will help you do it without any conflicts.

To install 2 Office suites on one computer without conflicts, follow these instructions:

Install 2 Office suites on the same computer to avoid conflicts

(Here we will guide you on how to simultaneously install Office 2003 and 2007 on the same machine)

Step 1: Install Office 2003 first, install normally.

After installing, create a folder named Office 2007 on drive C and proceed with the Office 2007 installation.

When prompted, select 'Customize' (Image below)

Step 2: On the Upgrade tab, check Keep all previous versions (Image below)

Step 3: Switch to the File Location tab and navigate to the created folder above (Image below)

Step 4: Go to the User Infomations tab, fill in the information below, and press 'Install Now' below. The installation process will proceed normally until completion (Image below)

Step 5: However, to avoid conflicts, you need to change some settings in the Registry

From Start, select Run, type Regedit, and navigate to the key:

HKEY_CURRENT_USER\Software\Microsoft\Office\12.0\Word\Options and

HKEY_CURRENT_USER\Software\Microsoft\Office\11.0\Word\Options

Go to New, select DWORD Value with the name ‘NoRereg’, enter the value 1, and click OK (Image below)

Finally, close all windows. You can now use both Office versions 2003 and 2007 simultaneously on the same machine without conflicts. For other versions, follow the same steps.

Note:

- If you create both, .docx files will be opened by Word 2007 and .doc files will be opened by Word 2003.

- If you create the value at HKEY_CURRENT_USER\Software\Microsoft\Office\11.0\Word\Options, both .docx and .doc files will be opened by Word 2007.

Frequently Asked Questions

What are the steps to install two Office suites on the same computer?

To install two Office suites on one computer, first install Office 2003 normally. Then, create a folder for Office 2007 and install it by selecting 'Customize'. Ensure to check 'Keep all previous versions' and adjust registry settings to avoid conflicts.

How can I avoid conflicts when using Office 2003 and 2007 together?

To avoid conflicts, you need to modify registry settings after installation. Specifically, navigate to the relevant registry keys and create a DWORD value named 'NoRereg' with a value of 1.

What file formats do the different Office versions open?

In this setup, .docx files will be opened by Word 2007 and .doc files by Word 2003, allowing you to manage both file types effectively.

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