Office Settings & Configuration

How to Set Microsoft Project 2013 as the Default Application

Anum MushtaqAnum Mushtaq Oct 29, 2026 871 views

Question details

The user wants to configure Windows so that Microsoft Project files automatically open in Project 2013 rather than a newer or unlicensed version like Project 365.

How to Set Microsoft Project 2013 as the Default Application
Product
Microsoft Project 2013
Device & OS
Windows
Scenario
Multiple versions of Microsoft Project are installed on the same computer, causing file association conflicts.
Observed behavior
Double-clicking project files opens them in Project 365 or an unlicensed version by default, and Project 2013 may not appear in the standard Windows default apps list.
Before you start

Ensure you have administrative privileges on your Windows computer and verify that Microsoft Project 2013 is fully installed and activated.

Solution 1Recommended

Change Default Apps by File Type in Windows Settings

Manually assign the specific Project file extensions (.mpp, .mpt, and .mpd) to Project 2013 using the Windows Settings menu.

This method forces Windows to bypass the newer Project 365 installation and explicitly map project management file types to your preferred Project 2013 client.

1
Open Windows Settings

Click the Start menu and select the gear icon to open Windows Settings.

2
Navigate to Default Apps

Go to 'Apps', then select 'Default apps' from the left-hand menu.

3
Choose by File Type

Scroll down to the bottom of the page and click on 'Choose default apps by file type'.

4
Assign Project 2013

Scroll down the list to find the .mpp, .mpt, and .mpd file extensions. Click the application currently assigned to them and select Microsoft Project 2013 from the list.

Change Default Apps by File Type in Windows Settings
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Frequently Asked Questions

Why does double-clicking a file open an unlicensed version of Project?

This happens when the default file association is linked to a newer or trial version of Project (like Project 365) that was installed after your licensed Project 2013. Windows defaults to the most recently installed program handling that file type.

Why isn't Project 2013 showing up in the Default Apps menu?

This is typically caused by a conflict between different installation technologies (MSI vs. Click-to-Run) when multiple Office versions exist on the same machine. Running an Office repair for Project 2013 usually restores its registry entries.

Can I use the 'Open With' menu to set the default app?

Yes. You can right-click the .mpp file, select 'Open with', then 'Choose another app'. Select Project 2013 from the list and be sure to check the box that says 'Always use this app to open .mpp files'.