How To Change Default Program For Opening Files Mac
In the opening dialog box, please: (1)Click to select the new program you will open this type of attachments with; (2) Check the Always use this app to open.CSV files option (or Always use the selected program to open this kind of file option); (3) Click the OK button.
Change Default Download Program
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When you first install Microsoft Word 2010, it automatically sets itself as the default program for handling Word documents. This means anytime you double-click a Word document from File Explorer or launch it from an email attachment, the document opens automatically in Word. However, a subsequently installed program or a manual override could have changed these settings so that Word is no longer the default program. To recover these settings, you need to reconfigure the file associations within Windows 8.

Type 'file associations' from the Windows 8 Start screen, click 'Settings' and select 'Make a File Type Always Open in a Specific Program' from the search results. If you're currently in Desktop mode, press the 'Windows' key to access the Start screen.
2.Double-click '.Docx' from the list of file extensions.
3.Click 'Microsoft Word' from the pop-up window to make it the default program.

Repeat the 'Microsoft Word' selection for '.Doc,' '.Docm,' '.Dot,' '.Dotx' and '.Dotm,' which are other common Word file extensions.
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Change Default Program Windows 7
Hi markyrwol,
A default program is the program that Windows uses when you open a particular type of file, such as a music file, an image, or a webpage. For example, if you have more than one web browser installed on your computer, you can choose one of them to be the default browser.
You may change (set another program as default program) your default program following the steps mentioned below:
1. Open Default Programs by clicking the Start button, and then clicking Default Programs.
2. Click Associate a file type or protocol with a program.
3. Click the file type or protocol that you want the program to act as the default for.
4. Click Change program.
5. Click the program that you want to use as the default for the file type you selected, or click the arrow next to Other Programs to show additional programs. (If you don't see Other Programs, or your program is not listed, click Browse to find the program you want to use, and then click Open. If no other programs are installed that are able to open the file type or protocol, your choices will be limited.)
Change Default Program Windows Xp
For more information, you may visit the link mentioned below:
Change which programs Windows uses by default
http://windows.microsoft.com/en-us/windows7/Change-which-programs-Windows-uses-by-default
Hope this information is useful.
Regards,
Sujan – Microsoft Support
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