Installation of both Office 2010 and Office 2007

Hi All,

OK, so here's the problem. I've installed Office 2010 64-bit, but since I have one important add-in not compatible with Word 2010 64-bit, I've installed my old Word 2007--it was installed fine, but... Both Word 2010 and 2007 are installed in different folders, and I can run them. Both are listed separately in Control Panel / Programs. The problem is that Windows 7 sees them actually just as "Microsoft Office Word", without differentiation.

If I select either 2010 or 2007 version through "Browse" button above, it will still be seen as "Microsoft Office Word", and it would refer to the latest Word installed or repaired, unless I run 2007 version. From then on, they will refer to 2007.

So, if I repair Word 2010 (in Control Panel / Programs / Change), all documents will be associated with Word 2010, unless I run 2007. Then it goes back to 2007 version, and even if I open Word 2010, all files will be open in 2007. Even if I change a default program as described above, they will be open in 2007.

I'd like to have 2010 as default. How can I do this? Or, alternative, to have *.doc files associated with 2007, and *.docx files with 2010.

I've been trying to set the above extensions in Control Panel / Programs / Default Programs / Set Associations (below picture), but the same story with the above-mentioned "Browse"--it will always refer to Word 2007.



Honorable Member
When you open with 2007, uncheck the "Always use the selected program to open this kind of file". Then 2010 will stay default.

When you open with 2007, uncheck the "Always use the selected program to open this kind of file". Then 2010 will stay default.
No, that doesn't make any difference, because when I "Browse" to select either Word 2007 or 2010, it always refers to 2007. (Unless I reinstall Word 2010, but even then, as I said, after I run 2007 it will go back again to 2007 without possibility of selecting Word 2010.) The only way to open a document in 2010 is to run Word 2010 first, and then open the document through File / Open.


Honorable Member
I don't understand. What do you mean "it always refers to 2007"? When you browse, don't you browse to the Word.exe in the proper folder? You said that office 2007 and 2010 installed themselves into different folders (and that's the only way it should be done.)

When you browse to the Word.exe in the 2007 folder, it should open the doc in 2007, and and when you browse to the Word.exe in the 2010 folder, it should open in 2010. Please explain.

Thank you for your reply.

Yes, I'm browsing to the windword.exe in the folder of Office 2010. Regardless of the "Always use the selected program to open this kind of file" option, the document always opens in Word 2007, not in 2010. It opens in 2010 only if I reinstall (repair) the 2010, and it keeps doing so as long as I don't run 2007--if I then run 2007, it goes back to the 2007 version.

So here's a step-by-step:
1. Right click on the file.
2. Select Open with / Choose default program...
3. Browse to D:\Software\Microsoft Office\Office14\WINWORD.EXE
4. Open
5. OK

It will open in Word 2007, because after browsing the selection is pointed to "Microsoft Office Word", as shown in the first screen attached in my first post. It just doesn't differentiate between the two versions, and it will always refer to Word 2007, unless I repay 2010 (and even that, only if I don't run 2007 after that).


Honorable Member
Your problem is that you installed 2007 after 2010. You need to install the older version first. You might have to uninstall both and install them again in the correct order.

From Microsoft:

If you want to install and use more than one version of Office on the same computer, use the following order. Microsoft Office 2000
First, Microsoft Office 2000
Second, Microsoft Office XP
Third, Office 2003
Fourth, 2007 Office suites and programs

You must install the earliest version of Office first. For example, if you want to use both Office 2003 and 2007 Office programs on the same computer, install Office 2003 first. You must use this order because of the way in which registry keys, shared programs, file name extensions, and other settings are managed for each version of the Office suites and programs.

How to install the individual 2007 Office features or to repair the installed 2007 Office programs

The article is about 2003 and 2007, but it goes for all version of office,

Last edited:
Many thanks for your reply.

Unfortunately, I can't do that either. I forgot to mention that I have a 64-bit version of Office 2010, and as you know there's no 64-bit version of Office 2007. So, here's what I get when I want to install Word 2010 after installing Word 2007:


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