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A "Not implemented" error when you use Source Code Control Interface to run a basic source control command in a Visual Studio 2008 isolated shell

When you use Microsoft Source Code Control Interface (also known as MSCCI) to run a basic source control command in a Microsoft Visual Studio 2008 isolated shell, you receive the following error message:
Unexpected error encountered. It is recommended that you restart the application as soon as possible.
Error: Not implemented
File: vsee\lib\shelutil\shelutil.cpp
Line number: 1387
For example, you receive the error message when you check out a file in Solution Explorer of the isolated shell.
This problem occurs because of an issue in the isolated shell.

Hotfix information

A supported hotfix is now available from Microsoft. However, it is intended to correct only the problem that this article describes. Apply it only to systems that are experiencing this specific problem.

To resolve this problem, contact Microsoft Customer Support Services to obtain the hotfix. For a complete list of Microsoft Customer Support Services telephone numbers and information about support costs, visit the following Microsoft Web site:Note In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question.


You must have Visual Studio 2008 Service Pack 1 (SP1) installed to apply this hotfix.

Restart requirement

You do not have to restart the computer after you apply the hotfix if no instance of Visual Studio is being used.

Hotfix replacement information

This hotfix does not replace any other hotfixes.

File information

The English version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time item in Control Panel.
File nameFile versionFile sizeDateTimePlatform
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

Article ID: 975247 - Last Review: 10/07/2011 16:05:00 - Revision: 2.0

Microsoft Visual Studio 2008 Shell (isolated mode) Redistributable Package

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