Change:
Testing Maybe a button to the right of the view header: !
Lets have action in the view header like below <img width="341" alt="image" src="https://user-"

Discussion:
import { IWorkbenchContributionsRegistry, Extensions as WorkbenchExtensions, IWorkbenchContribution } from 'vs/workbench/common/contributions'; import { IOutputChannelRegistry, Extensions as OutputExtensions } from 'vs/workbench/services/output/common/output'; import { SyncDescriptor } from 'vs/platform/instantiation/common/descriptors'; <del> import { VIEWLET_ID, IExtensionsWorkbenchService, IExtensionsViewPaneContainer, TOGGLE_IGNORE_EXTENSION_ACTION_ID, INSTALL_EXTENSION_FROM_VSIX_COMMAND_ID, WORKSPACE_RECOMMENDATIONS_VIEW_ID, IWorkspaceRecommendedExtensionsView, AutoUpdateConfigurationKey, HasOutdatedExtensionsContext, SELECT_INSTALL_VSIX_EXTENSION_COMMAND_ID, LIST_WORKSPACE_UNSUPPORTED_EXTENSIONS_COMMAND_ID, ExtensionEditorTab, THEME_ACTIONS_GROUP, INSTALL_ACTIONS_GROUP } from 'vs/workbench/contrib/extensions/common/extensions'; </del> <ins> import { VIEWLET_ID, IExtensionsWorkbenchService, IExtensionsViewPaneContainer, TOGGLE_IGNORE_EXTENSION_ACTION_ID, INSTALL_EXTENSION_FROM_VSIX_COMMAND_ID, WORKSPACE_RECOMMENDATIONS_VIEW_ID, IWorkspaceRecommendedExtensionsView, AutoUpdateConfigurationKey, HasOutdatedExtensionsContext, SELECT_INSTALL_VSIX_EXTENSION_COMMAND_ID, LIST_WORKSPACE_UNSUPPORTED_EXTENSIONS_COMMAND_ID, ExtensionEditorTab, THEME_ACTIONS_GROUP, INSTALL_ACTIONS_GROUP, OUTDATED_EXTENSIONS_VIEW_ID } from 'vs/workbench/contrib/extensions/common/extensions'; </ins> import { ReinstallAction, InstallSpecificVersionOfExtensionAction, ConfigureWorkspaceRecommendedExtensionsAction, ConfigureWorkspaceFolderRecommendedExtensionsAction, PromptExtensionInstallFailureAction, SearchExtensionsAction, SwitchToPreReleaseVersionAction, SwitchToReleasedVersionAction, SetColorThemeAction, SetFileIconThemeAction, SetProductIconThemeAction, ClearLanguageAction } from 'vs/workbench/contrib/extensions/browser/extensionsActions'; import { ExtensionsInput } from 'vs/workbench/contrib/extensions/common/extensionsInput'; import { ExtensionEditor } from 'vs/workbench/contrib/extensions/browser/extensionEditor';

title: { value: localize('updateAll', "Update All Extensions"), original: 'Update All Extensions' }, category: ExtensionsLocalizedLabel, precondition: HasOutdatedExtensionsContext, <del> menu: [{ id: MenuId.CommandPalette, when: ContextKeyExpr.and(CONTEXT_HAS_GALLERY, ContextKeyExpr.or(CONTEXT_HAS_LOCAL_SERVER, CONTEXT_HAS_REMOTE_SERVER, CONTEXT_HAS_WEB_SERVER)) }, { id: MenuId.ViewContainerTitle, when: ContextKeyExpr.and(ContextKeyExpr.equals('viewContainer', VIEWLET_ID), ContextKeyExpr.or(ContextKeyExpr.has(`config.${AutoUpdateConfigurationKey}`).negate(), ContextKeyExpr.equals(`config.${AutoUpdateConfigurationKey}`, 'onlyEnabledExtensions'))), group: '1_updates', order: 2 }], </del> <ins> menu: [ { id: MenuId.CommandPalette, when: ContextKeyExpr.and(CONTEXT_HAS_GALLERY, ContextKeyExpr.or(CONTEXT_HAS_LOCAL_SERVER, CONTEXT_HAS_REMOTE_SERVER, CONTEXT_HAS_WEB_SERVER)) }, { id: MenuId.ViewContainerTitle, when: ContextKeyExpr.and(ContextKeyExpr.equals('viewContainer', VIEWLET_ID), ContextKeyExpr.or(ContextKeyExpr.has(`config.${AutoUpdateConfigurationKey}`).negate(), ContextKeyExpr.equals(`config.${AutoUpdateConfigurationKey}`, 'onlyEnabledExtensions'))), group: '1_updates', order: 2 }, { id: MenuId.ViewTitle, when: ContextKeyExpr.equals('view', OUTDATED_EXTENSIONS_VIEW_ID), group: 'navigation', order: 1 } ], icon: installWorkspaceRecommendedIcon, </ins> run: () => { return Promise.all(this.extensionsWorkbenchService.outdated.map(async extension => { try {

import { ITelemetryService } from 'vs/platform/telemetry/common/telemetry'; import { IInstantiationService, ServicesAccessor } from 'vs/platform/instantiation/common/instantiation'; import { IExtensionService } from 'vs/workbench/services/extensions/common/extensions'; <del> import { IExtensionsWorkbenchService, IExtensionsViewPaneContainer, VIEWLET_ID, CloseExtensionDetailsOnViewChangeKey, INSTALL_EXTENSION_FROM_VSIX_COMMAND_ID, WORKSPACE_RECOMMENDATIONS_VIEW_ID, AutoCheckUpdatesConfigurationKey } from '../common/extensions'; </del> <ins> import { IExtensionsWorkbenchService, IExtensionsViewPaneContainer, VIEWLET_ID, CloseExtensionDetailsOnViewChangeKey, INSTALL_EXTENSION_FROM_VSIX_COMMAND_ID, WORKSPACE_RECOMMENDATIONS_VIEW_ID, AutoCheckUpdatesConfigurationKey, OUTDATED_EXTENSIONS_VIEW_ID } from '../common/extensions'; </ins> import { InstallLocalExtensionsInRemoteAction, InstallRemoteExtensionsInLocalAction } from 'vs/workbench/contrib/extensions/browser/extensionsActions'; import { IExtensionManagementService } from 'vs/platform/extensionManagement/common/extensionManagement'; import { IWorkbenchExtensionEnablementService, IExtensionManagementServerService, IExtensionManagementServer } from 'vs/workbench/services/extensionManagement/common/extensionManagement';

* View used for searching outdated extensions */ viewDescriptors.push({ <del> id: 'workbench.views.extensions.searchOutdated', </del> <ins> id: OUTDATED_EXTENSIONS_VIEW_ID, </ins> name: localize('availableUpdates', "Available Updates"), ctorDescriptor: new SyncDescriptor(OutdatedExtensionsView, [{}]), when: ContextKeyExpr.or(SearchExtensionUpdatesContext, ContextKeyExpr.has('searchOutdatedExtensions')),

} export const WORKSPACE_RECOMMENDATIONS_VIEW_ID = 'workbench.views.extensions.workspaceRecommendations'; <ins> export const OUTDATED_EXTENSIONS_VIEW_ID = 'workbench.views.extensions.searchOutdated'; </ins> export const TOGGLE_IGNORE_EXTENSION_ACTION_ID = 'workbench.extensions.action.toggleIgnoreExtension'; export const SELECT_INSTALL_VSIX_EXTENSION_COMMAND_ID = 'workbench.extensions.action.installVSIX'; export const INSTALL_EXTENSION_FROM_VSIX_COMMAND_ID = 'workbench.extensions.command.installFromVSIX';