Known --- Files

Leading --- Type

.---

File ID:	.---
Group:	Windows Temporary File

The --- file suffix is associated with some earlier versions of Windows operating systems. These files are temporary files created by computer applications for various purposes such as a mode of inter-process connection or whenever a program can't allocate memory that is sufficient for its tasks.

Created by:	Microsoft Corporation
Group:	Temporary Files
Registry Key:	HKEY_CLASSES_ROOT\.---

Software Programs That Open The Windows Temporary File:

MS-DOS by Microsoft Corporation

Windows

Microsoft Windows 3.x by Microsoft Corporation

Windows

Alternative --- Types

.---

File ID:	.---
Group:	Microsoft Backup File Set

The file extension --- is also related to some Microsoft operating systems such as Microsoft Windows and MS-DOS. The file stores backup file set.

Created by:	Microsoft Corporation
Group:	Backup Files

Software Programs That Open Microsoft Backup File Set Files:

Microsoft Windows by Microsoft Corporation

Compatible with:

Windows

MS-DOS by Microsoft Corporation

Compatible with:

Windows

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Troubleshoot --- Files

Common Problems Opening --- Files

MS-DOS Isn't There

When you double-click your --- file, you may see a dialog box from your operating system stating that it "Cannot Open This File Type". Customarily, this means that MS-DOS is not installed on %%os%%. You won't be able to double-click to open your --- because your OS doesn't know what to do with it.

Tip: When you have another program installed that you know will open your ---, you can select it from the other programs listed (see "Show Apps").

MS-DOS is Out-of-Date

Occasionally, you might have an outdated version of MS-DOS installed that's incompatible with your Windows Temporary File type. If you've got the wrong version of MS-DOS installed, you'll need to install the correct version. The primary cause of this problem is that your Windows Temporary File file was created by a different (newer) version of MS-DOS than what's installed.

Tip: Right-clicking on your ---, then clicking "Properties" (Windows) or "Get Info" (Mac), can provide clues about your file version.

Summary: Not having the right MS-DOS version on your computer can cause problems opening --- files.

More Causes of Problems Opening ---s

Assuming you have the right MS-DOS version installed, other problems can prevent you from opening --- files. If you're still experiencing problems opening --- files, there could be other computer problems. These issues include:

• Windows Registry --- file paths that are incorrect
• Deletion of the --- file description from the Registry by mistake
• MS-DOS or another --- application experienced a flawed installation
• Something has caused file corruption of your ---
• Your --- is infected with malware
• Hardware related to ---s has device driver corruption
• Too many applications are open on your PC to load your Windows Temporary File file successfully