Symptoms

Assume that you use Visual Studio 2015 in Windows 10 version 1709. When you try to save a file in the editor that belongs to an Apache Cordova, ASP.NET Core Web Application (.NET Core), or Universal Windows Platform (UWP) project with JavaScript, the file either disappears from the project or changes to show a missing file icon.

Cause

Windows 10 version 1709 includes a fix for some file system events. Visual Studio 2015 mistakenly interprets these events as deleting the file.

Download Information

The following file is available for download from the Microsoft Download Center:

Download Download the update package now.

For more information about how to download Microsoft support files, click the following article number to view the article in the Microsoft Knowledge Base:

119591How to obtain Microsoft support files from online services

Microsoft scanned this file for viruses. Microsoft used the most current virus-detection software that was available on the date that the file was posted. The file is stored on security-enhanced servers that help prevent any unauthorized changes to the file.

Workaround

To work around this issue, reload the project. After reloading, the project will include the missing file again. 

More Information

Prerequisites

To apply this hotfix, you must have Visual Studio 2015 Update 3 installed.

Restart information

You may have to restart the computer after you apply this hotfix.

Replacement information

This hotfix does not replace any previously released hotfix.

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 name

File version

File size

Date

Time

Platform

VS14-KB4089821.exe

14.0.27514.0

3,506,832

15-Mar-2018

9:23

X86

Status

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section

References

Learn about the terminology that Microsoft uses to describe software updates.

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