March 2021 (version 1.55)

Update 1.55.1: The update addresses these issues.

Update 1.55.2: The update addresses these security issues.

Downloads: Windows: x64 Arm64 | Mac: Universal Intel silicon | Linux: deb rpm tarball Arm snap

Welcome to the March 2021 release of Visual Studio Code. There are a number of updates in this version that we hope you will like, some of the key highlights include:

If you'd like to read these release notes online, go to Updates on

Join us live at the VS Code team's livestream on Thursday, April 8 at 8am Pacific (4pm London) to see a demo of what's new in this release, and ask us questions live.

Insiders: Want to try new features as soon as possible? You can download the nightly Insiders build and try the latest updates as soon as they are available.


Multi-cursor support

We have added initial screen reader support for multiple cursors. Whenever a new cursor is added, VS Code now announces it along with the cursor line and column position. VS Code also announces when secondary cursors have been removed. We plan to further improve multi-cursor accessibility as we receive more feedback.

Increased limit to 1000 lines for screen reader

Thanks to upstream issues being fixed, we have increased the number of lines that a "Say All" command can read. Previously, we had a hard limit of 100 lines that could be announced by a screen reader at one time, and we have now increased this limit to 1000. Further upstream fixes are needed in order for us to not have any limit at all.

Due to this change, the setting editor.accessibilityPageSize is now deprecated. We will still support this setting in the next couple of releases, however we plan to fully drop it in the future.


Encryption update on Windows

We've changed the way we encrypt secrets on Windows, which impacts Settings Sync and extensions using the secrets API. Users on Windows will be automatically signed out on update and will need to authenticate again.

Updated brand icons for macOS Big Sur

Brand icons on macOS Big Sur

We've been working on updating the VS Code brand icons on macOS to match the new visual style of Big Sur. We've appreciated all of the feedback from the community, and we are happy to release the new logos for Stable and Insiders. We are also using the same logos on all platforms.

Stable Insiders Exploration
Stable icon Insiders icon Exploration icon

Improved sash customization

A new workbench.sash.hoverDelay setting lets you define the delay for the hover feedback of sashes. The existing workbench.sash.size setting has been improved in order to still provide a large surface grabbing area for touch devices, while keeping the UI clean.

Improved List/Tree navigation

Lists and Trees now support a custom keyboard navigation mode that behaves more naturally in specific areas such as Notebooks.

Additionally, Shift+Click range selections behave more deterministically.

Tab decorations on by default

Tab decorations for editors are now on by default, to configure them use workbench.editor.decorations.colors and workbench.editor.decorations.badges

Editor tab with decorations showing that the file has warnings and is modified for git Theme: GitHub Light Theme

Resizing columns in Keyboard Shortcuts editor

The Keyboard Shortcuts editor is now refactored to use the new table widget, allowing users to resize the columns in the editor.

Extension management improvements

  • VS Code now detects extensions installed/uninstalled through the VS Code CLI. Extensions can be activated/de-activated in the active window (instance) and will be correctly displayed in the Extensions view.

  • VS Code now shows the set of extensions included in an extension that sets the extensionPack property in a separate Extension Pack tab even when the extension is not categorized as Extension Packs.

Extension that is not an extension pack but includes other extensions

Theme: GitHub Light Theme

Negative text filtering in Problems view

You can now filter problems that do not contain specific text from the Problems view by prepending ! to the filter text.

Reporting Marketplace issues

Last month we highlighted that there's a new public repository for issues related to the Extension Marketplace. Now, VS Code's issue reporter supports creating issues in this repository.

Configure tree hover delay

The hover delay for extension contributed tree views can now be configured with workbench.hover.delay.


The emmet.extensionsPath setting now takes in only string arrays, and can be directly edited in the Settings editor.

Search in Open Editors

You can now toggle the Search Only in Open Editors checkbox in a workspace search to change from searching the entire workspace to only searching in files that have been opened in editor tabs. This previously was enabled via an opt-in, this iteration we've enhanced the behavior with files that have not yet been loaded in the VS Code session and enabled it by default.

Control the font size of the Source Control input

You can now change the font size of the Source Control input via the new scm.inputFontSize setting.

Integrated Terminal

Terminal profiles

The terminal now supports defined profiles, which appear in the terminal's dropdown, to conveniently launch non-default shells:

Terminal profiles show up below the terminal processes and above the configuration items

VS Code will automatically detect and surface some of the more commonly used shells through this menu, but they can also be configured using the terminal.integrated.profiles.<platform> setting. With this setting, it's possible to add new profiles, change existing profiles and remove default profiles. For example:

"": {
  // Add a PowerShell profile that doesn't run the profile
  "PowerShell (No Profile)": {
      // Some sources are available which auto detect complex cases
      "source": "PowerShell",
      "args": ["-NoProfile"],
      // Name the terminal "PowerShell (No Profile)" to differentiate it
      "overrideName": true
  // Remove the builtin Git Bash profile
  "Git Bash": null,
  // Add a Cygwin profile
  "Cygwin": {
    "path": "C:\\cygwin64\\bin\\bash.exe",
    "args": ["--login"]

The recommended way to initially add a profile is via the Select Default Profile command, which allows creating profiles based on either an existing profile or other detected shells.

The Select Default Profile command shows all configured and detected profiles

Auto detected WSL profiles and improved defaults on Windows

Along with the new profiles feature, we now auto detect WSL profiles and show them in the list by default. This can be turned off with the terminal.integrated.useWslProfiles setting.

Cygwin is also now auto detected and exposed in the Select Default Profile command and Git Bash will run as a login shell (running ~/.bash_profile).

WebGL renderer is the new default

The terminal first got the experimental WebGL renderer back in the November 2019 release, which based our calculations at the time could increase performance by up to 900% and by even more if your environment had issues with rendering using a standard 2D canvas context.

Since then, the WebGL renderer has gradually improved in stability and had its feature gap closed. We decided now is as good a time as any to make the transition, but will be watching for any issue reports.

As part of this work we also added some fallback logic. When "terminal.integrated.rendererType": "auto", the following happens:

  1. The WebGL renderer will try to start up.
  2. If it fails, for example due to lack of OS/browser support:
    • The canvas renderer will be enabled and the time it takes to render a frame will start to be measured.
  3. If the first 20 frames are rendering slowly, for example if there are hardware issues or GPU rendering is disabled:
    • The DOM renderer will be enabled.

In the next release, we plan on removing the rendererType setting all together in favor of a much more understandable "terminal.integrated.gpuAcceleration": "auto" | "on" | "off".

Seamless terminal relaunching

Last release, we introduced automatic relaunching of terminals when an extension wants to change the environment. This release will now prevent the flickering that was caused before when the relaunch occurs. If the output of the new terminal is identical to the last, there is no feedback or distractions caused by the relaunch.

There is also a new setting to disable this automatic relaunching all together terminal.integrated.environmentChangesRelaunch.


New auto closing pair deletion

The behavior of pressing Backspace has changed when inside auto-closing pairs. The editor will now delete the matching closing bracket or matching closing quote only if the editor auto-inserted that character. This behavior is controlled via a newly introduced setting called editor.autoClosingDelete, which can be configured to "always" to get the previous behavior.


Improvements to breakpoints

Inline menu to edit conditions and hit count

We now show an inline menu for editing conditions and hit counts for function breakpoints. Previously the inline edit button would choose automatically what condition to edit. Now, the menu should make the flow easier and give more control to the user.

Breakpoint condition menu

Support for all access types of data breakpoints

Now VS Code's generic debugger UI supports all data breakpoint access types defined in the Debug Adapter Protocol as context menu actions in the VARIABLES view:

  • Break on Value Read: breakpoint will be hit every time a variable gets read.
  • Break on Value Change: breakpoint will be hit every time a variable gets changed (this action was previously available).
  • Break on Value Access: breakpoint will be hit every time a variable is read or changed.

Please note that debug extensions have to opt into this feature in order to make individual actions available. For now, only the Mock Debug extension has (simulated) support for all three access types, but we expect other debug extensions to follow soon - such as the Java extension.

Data breakpoints break on access types

Clearing a terminal before launching a debuggee

Some debug extensions allow you to launch debuggees in VS Code's Integrated Terminal. In order to keep the number of Integrated Terminals small, VS Code tries to reuse a terminal if it is not blocked by a still running command. A consequence of this approach is that previous commands and program output will remain visible in the terminal, which is sometimes confusing.

In this release, we've introduced a new feature to automatically clear the Integrated Terminal before starting a new debug session. The feature is controlled by the new setting debug.terminal.clearBeforeReusing.

JavaScript debugging

As usual, the complete list of changes can be found in the vscode-js-debug changelog.

Start Debugging and Stop on Entry

When we moved to our new debugger, last year, the Debug: Start Debugging and Stop on Entry was left behind. It once again works, and requests the debugger to pause on the first line of your Node.js program. By default it is bound to F10.

Improved handling of symbolic links

Debugging Node.js programs with symbolic links can require special flags to be passed to the program. Without these flags, breakpoints remained unbound, and it was hard to figure out what was going wrong. Now, the debugger will automatically detect these cases and provide a helpful notification.

Notification that says "It looks like you have symlinked files. You might need to update your configuration to make this work as expected," with buttons to "Read More" and "Ignore"


Multiple cell selection

We now support selecting multiple cells in a Notebook using the mouse (Shift+Click) or keyboard shortcuts (Shift+Arrow). Once multiple cells are selected, you can then copy/cut/paste/move/duplicate selected cells.

Notebook multiple cells selection

You can also drag and drop multiple cells together.

Notebook multiple cells selection drag and drop

Limitations: When there are multiple distinct ranges of cells selected, most commands will only be executed against the first range or the focused range. We will continue improving this experience in upcoming releases.

We also added a new color token, notebook.inactiveSelectedCellBorder, that has no default color but is available for themes that prefer to use borders for multi-select instead of background colors:

Notebook cells being multi-selected via border instead of background colors

Show/hide output and metadata differences in the diff editor

We have heard from users that when reviewing changes in a Notebook, the modifications in notebook cell metadata or outputs can be distracting or irrelevant. VS Code now allows you to control the visibility of metadata or output changes in the diff editor using the settings notebook.diff.ignoreMetadata and notebook.diff.ignoreOutputs. They can also be toggled by using the Show Outputs/Metadata Differences command from the editor title toolbar.

Notebook show metadata/outputs differences

Preview features

Continued improvements to extensible Markdown renderers in Notebooks

We continued improving our support extending the Markdown renderer in Notebooks. Our focus this iteration was improving performance of the new renderers. We also fixed many regressions that the new renders introduced.

Emoji and a math formula being rendered in a notebook cell

The new renderers are still disabled by default but we are now more confident that we will be able to enable them soon. You can try out the new extensible Markdown renderers today with the undocumented notebook.experimental.useMarkdownRenderer: true setting. After enabling this setting and restarting VS Code, you should be able to use :emoji: and KaTeX $math$ formulas in Markdown cells.

Getting Started

We are continuing an overhaul of our default startup editor in order to provide relevant extension-contributed tips and walkthroughs, intended to make both core VS Code features and extension contributions more approachable to new users. Many Insiders users may have already seen it, and it will be slowly rolled out to more Stable users over the course of this iteration. You can always opt in or out of the new behavior by modifying the workbench.startupEditor setting to or away from gettingStarted.

Getting Started experience walkthrough Theme: GitHub Light

Contributions to extensions

Remote Development

Work continues on the Remote Development extensions, which allow you to use a container, remote machine, or the Windows Subsystem for Linux (WSL) as a full-featured development environment.

Feature highlights in 1.55 include:

  • Double-click to name ports
  • Configure default port detection behavior
  • Updated experience for cloning a repository in a container volume

You can learn about new extension features and bug fixes in the Remote Development release notes.

GitHub Pull Requests and Issues

Work continues on the GitHub Pull Requests and Issues extension, which allows you to work on, create, and manage pull requests and issues.

To learn about all the new features and updates, you can see the full changelog for the 0.25.0 release of the extension.

Extension authoring

Untitled file API for custom editors & Notebooks

Custom editors and Notebooks now include an untitledDocumentData property on the open context, which includes the buffer of the data included in the untitled file that the user triggered a Reopen With on. This property should be read instead of the URI if populated as the URI doesn't point to a file on disk in the untitled file case.

Inline values provider API

The proposed inline values provider API introduced last milestone has been finalized and can now be used in extensions published on the Marketplace.

New Copy As submenus

There are two new menu locations, which appear in the UI as a Copy As submenu:

  • menuBar/edit/copy - for the title bar Edit menu
  • editor/context/copy - for the editor context menu

Copy As submenu

New extension property on ExtensionContext

Extension authors can now use the new extension property on ExtensionContext, which is passed into the extension's activate function. This returns the same Extension instance that vscode.extensions.getExtension(<extension-id>) returns, which contains properties such as the extension's ID, version, and a serialized packageJSON property where you can access data directly from your extension's package.json file.

Docker compose language

A new Docker compose language has been added. This won't have much user facing change; however, extension authors can now use this to target Docker compose files. The language ID is dockercompose.

Telemetry enablement API

Extensions could always check whether or not the user had disabled telemetry via the configuration value of telemetry.telemetryLevel, but it was not possible to check if the user had used the CLI flag --disable-telemetry. This milestone, we've added two more properties to the env object of extension API: isTelemetryEnabled and onDidChangeTelemetryEnabled. The former takes into account the CLI flag and the current configuration value. The latter is event that fires any time isTelemetryEnabled changes.

Workspace Trust development

For several iterations, we have been exploring a security feature we refer to as Workspace Trust. As we near its release, we seek to engage extension authors to start their onboarding process and get feedback. At the present, extensions that are not updated to handle Workspace Trust will inherit safe defaults; however, for an optimal user-experience, we request extension authors read more information in issue #106488 and subscribe for updates as we progress through the next iteration.

Proposed extension APIs

Every milestone comes with new proposed APIs and extension authors can try them out. As always, we want your feedback. This is what you have to do to try out a proposed API:

  • You must use Insiders because proposed APIs change frequently.
  • You must have this line in the package.json file of your extension: "enableProposedApi": true.
  • Copy the latest version of the vscode.proposed.d.ts file into your project's source location.

You cannot publish an extension that uses a proposed API. There may be breaking changes in the next release and we never want to break existing extensions.


This month our work was focused around resolving the provider portion of the testing APIs. Primarily, moving to an approach that allows for tests to be loaded on-demand and asynchronously. Shifting to an asynchronous approach presented challenges that required semantics new to the extension host API to solve. This iteration we merged in the changes, and will refine them over the coming month. We hope to begin finalizing portions of the testing API in our April iteration.


The proposed triggerKind property on CodeActionContext tracks why code actions are being requested from a CodeActionProvider. The possible values of this property are:

  • Invoke: Code actions were requested explicitly, either with a keyboard shortcut or command.

  • Automatic: Code actions were requested without explicit user action. This includes requesting code actions when the contents of a document change.

Providers can use triggerKind to return different sets of results depending on how code actions are requested. For example, a refactoring code action provider that is triggered automatically may only return refactorings for the exact current selection in order to limit how often the code action lightbulb shows up. However when code actions are explicitly requested, the same provider may automatically expand the current selection to try to show all the refactorings that a user may be interested in at the current location.


Any extension that starts processes that listen on ports and wants to have a stellar experience when used with a VS Code remote extension should consider providing feedback and adopting the new PortsAttributesProvider API. Since VS Code detects and automatically forwards ports when using one of the remote extensions, any extension that listens on ports will have those ports automatically forwarded. Often though, these ports are only important for the internal workings of the extension, and it isn't useful for the user to have these ports forwarded. This API can be used to set the behavior when a port is detected to prevent unwanted autoforwarding of ports that shouldn't be user facing.

Quick input options title

The QuickPickOptions passed in to showQuickPick and InputBoxOptions passed into showInputBox now have an optional title property that was previously only available in the createQuickPick API. This property, when set, displays a title bar on the quick input with the title you specified.

Language Server Protocol

A draft version of the diagnostic pull model specification is now available for feedback.

Debug Adapter Protocol

The stopped event can now report the breakpoints that were hit

An optional attribute hitBreakpointIds has been added to the stopped event that contains the IDs of the breakpoints that triggered the event.

Note that VS Code does not yet surface this information in any way. We are discussing possible UI ideas in issue #118743.


Faster Snap launch

The snap package now uses the lzo compression algorithm, which provides faster launch times. For more information, see the blog post from Ubuntu about the algorithm.

Progress on Electron sandbox

This milestone we continued to make the VS Code window ready for enabling Electron's sandbox and context isolation features.


  • We were able to move some of the native module requirements we have in the renderer to other processes.
  • We were able to make more components and services available when sandbox option is enabled.


VS Code and JavaScript in the classroom

Read the case study of a Computer Science lecturer at Naresuan University in Thailand, who uses VS Code in his introductory Web Development classes with JavaScript and Node.js. Learn about the settings and extensions he recommends for his students, as well as a helpful Node.js and JavaScript Education Extension Pack.

Raspberry Pi

There is a new topic describing how to install VS Code on Raspberry Pi devices.

Raspberry Pi logo

Notable fixes

  • 74505: Emmet built-in plugin cheats starting with @ expand only inside blocks
  • 97632: Emmet kicks in when editing pure xml documents
  • 107506: Debug Variables View does not show multiple variables from Debug Adapter when names are not unique
  • 112675: Emmet abbreviations are not working in .scss files
  • 113801: Tab wrap - tab should not fill all spare space when wrap to new line
  • 115814: Unable to type in Chinese in integrated terminal
  • 117350: Should Home/End, PageUp/PageDown also navigate in actions?
  • 117967: Copy + Paste automatically open file in new tab
  • 118210: debug console shouldn't collapse messages when they have different source locations
  • 118557: Strange behavior of files.exclude in workspace with nested folders
  • 118839: My screen reader does not find information about a remote connection in the status bar
  • 119585: All problems disappear when closing file

Thank you

Last but certainly not least, a big Thank You to the following people who contributed this month to VS Code:

Contributions to our issue tracking:

Contributions to vscode:

Contributions to vscode-emmet-helper:

Contributions to vscode-eslint:

Contributions to vscode-hexeditor:

Contributions to vscode-html-languageservice:

Contributions to vscode-js-debug:

Contributions to vscode-languageserver-node:

Contributions to vscode-mock-debug:

Contributions to vscode-textmate:

Contributions to vscode-vsce:

Contributions to debug-adapter-protocol:

Contributions to language-server-protocol: