Sorts of CT1 Files

Chief CT1 Description

.CT1

Formatting:	.ct1
File Type:	Microsoft Systems Management Server Proposed Site Control Data

A CT1 file is a data file associated with the Microsoft Systems Management Server. It is used for files that contain proposed site control data.

Created by:	Microsoft Corporation
Division:	Data Files
Entry:	HKEY_CLASSES_ROOT\.ct1

Software Programs That Open The Microsoft Systems Management Server Proposed Site Control Data:

Microsoft Systems Management Server by Microsoft Corporation

Windows

	Mac
	iOS

Android

Linux

Symbian OS

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Understanding CT1 Issues

Frequent CT1 Opening Issues

Microsoft Systems Management Server Removed

Double-clicking your CT1 file prompts the message "%%os%% Can't Open CT1 File". If this is the case, it's usually due to the fact that you do not have Microsoft Systems Management Server for %%os%% installed on your computer. The typical path of opening your CT1 with a double-click won't work because %%os%% cannot make the program connection.

Tip: When you have another program installed that you know will open your CT1, you can select it from the other programs listed (see "Show Apps").

Outdated Microsoft Systems Management Server

Your Microsoft Systems Management Server Proposed Site Control Data file is incompatible with Microsoft Systems Management Server because you might have the wrong version installed. You will need to download a newer version of Microsoft Systems Management Server if you don't have the right version. Most of the time your Microsoft Systems Management Server Proposed Site Control Data file was created by a newer Microsoft Systems Management Server than what you have installed.

Tip: Find clues on the correct software version by right-clicking your CT1 file and clicking "Properties".

Ultimately, most of the difficulties opening CT1 files are due to having the wrong version of Microsoft Systems Management Server installed.

Other Causes of CT1 File Opening Problems

In the majority of cases, installing the right version of Microsoft Systems Management Server will resolve your issue. If you are continuing to have errors with loading CT1 files, other external issues might be to blame. Other contributing causes:

• File references in the Windows Registry for CT1 are wrong
• Unintentional removal of the description of the CT1 file inside the Windows Registry
• Defective install of a CT1 program, such as Microsoft Systems Management Server
• Your CT1 file is corrupted (issues with your Microsoft Systems Management Server Proposed Site Control Data file itself)
• Your CT1 is infected with malware
• Hardware associated with CT1 has outdated drivers
• Insufficient system resources to successfully open Microsoft Systems Management Server Proposed Site Control Data files