Known TT2 Files

Main TT2 Affiliation

.TT2

File Ext:	.tt2
Class:	Microsoft Office 2013 Installation

A TT2 file is associated with Microsoft Office 2013 and contains a form of temporary installation data and are created in the root on system drive during setup of Microsoft Office or free standalone OneNote application.

Created by:	Microsoft Corporation
Class:	Temporary Files
Key:	HKEY_CLASSES_ROOT\.tt2

Software Programs That Open The Microsoft Office 2013 Installation:

Microsoft Office by Microsoft Corporation

Windows

Mac

Microsoft OneNote by Microsoft Corporation

	Windows
	Windows Phone

	Mac
	iOS

Android

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Troubleshoot TT2 Files

Issues Opening TT2 Files

Microsoft Office is Not Installed

When trying to open your TT2 file, you get the error "Can't Open TT2 File Type". Customarily, this means that Microsoft Office is not installed on %%os%%. Your operating system cannot associate your TT2 with Microsoft Office, so double-clicking the file won't work.

Tip: If you don't have Microsoft Office installed, and you know of another program to open your TT2 file, you can try opening it by selecting from the programs listed under "Show Apps".

Outdated Microsoft Office

Your Microsoft Office 2013 Installation file is incompatible with Microsoft Office because you might have the wrong version installed. You will need to download a newer version of Microsoft Office if you don't have the right version. This problem is most common when you have an older version of the software application, and your file was created by a newer version that it cannot recognize.

Tip: If you right-click on your TT2 file, then select "Properties" (Windows) or "Get Info" (Mac), you can obtain hints about what version you need.

Regardless, most of the TT2 file opening problems relate to not having the right version of Microsoft Office installed.

Other Causes of TT2 File Opening Problems

Even with the correct version of Microsoft Office installed, you can still experience difficulties opening TT2s. If you are continuing to have errors with loading TT2 files, other external issues might be to blame. These other problems include (listed in order from most to least common):

• Invalid TT2 file references in the Windows Registry (the "phonebook" of the Windows Operating System)
• Accidental deletion of the description of the TT2 file in the Windows registry
• Invalid installation of a TT2-associated program (eg. Microsoft Office)
• Your TT2 can't be loaded properly (file corruption)
• Your TT2 is infected with malware
• Drivers associated with TT2 software need to be updated
• Insufficient system resources to successfully open Microsoft Office 2013 Installation files