diff --git a/extensions/debug-auto-launch/package.json b/extensions/debug-auto-launch/package.json
index 1caa3a5149c..8535f3f8b37 100644
--- a/extensions/debug-auto-launch/package.json
+++ b/extensions/debug-auto-launch/package.json
@@ -10,6 +10,7 @@
   },
   "icon": "media/icon.png",
   "capabilities": {
+    "virtualWorkspaces": false,
     "untrustedWorkspaces": {
       "supported": true
     }
diff --git a/extensions/debug-server-ready/package.json b/extensions/debug-server-ready/package.json
index cdf39fc78b5..6b8a0be9ea5 100644
--- a/extensions/debug-server-ready/package.json
+++ b/extensions/debug-server-ready/package.json
@@ -13,6 +13,7 @@
     "onDebugResolve"
   ],
   "capabilities": {
+    "virtualWorkspaces": false,
     "untrustedWorkspaces": {
       "supported": true
     }
diff --git a/extensions/git/package.json b/extensions/git/package.json
index cc848220f23..cb4cf19e78b 100644
--- a/extensions/git/package.json
+++ b/extensions/git/package.json
@@ -27,6 +27,7 @@
     "test": "node ../../node_modules/mocha/bin/mocha"
   },
   "capabilities": {
+    "virtualWorkspaces": false,
     "untrustedWorkspaces": {
       "supported": true
     }
diff --git a/extensions/grunt/package.json b/extensions/grunt/package.json
index a1577c65dae..d7fbd50e57a 100644
--- a/extensions/grunt/package.json
+++ b/extensions/grunt/package.json
@@ -27,6 +27,7 @@
     "onCommand:workbench.action.tasks.runTask"
   ],
   "capabilities": {
+    "virtualWorkspaces": false,
     "untrustedWorkspaces": {
       "supported": true
     }
diff --git a/extensions/gulp/package.json b/extensions/gulp/package.json
index 779a34afab0..2fb8d583123 100644
--- a/extensions/gulp/package.json
+++ b/extensions/gulp/package.json
@@ -27,6 +27,7 @@
     "onCommand:workbench.action.tasks.runTask"
   ],
   "capabilities": {
+    "virtualWorkspaces": false,
     "untrustedWorkspaces": {
       "supported": true
     }
diff --git a/extensions/jake/package.json b/extensions/jake/package.json
index 0d717122364..ce19974e105 100644
--- a/extensions/jake/package.json
+++ b/extensions/jake/package.json
@@ -27,6 +27,7 @@
     "onCommand:workbench.action.tasks.runTask"
   ],
   "capabilities": {
+    "virtualWorkspaces": false,
     "untrustedWorkspaces": {
       "supported": true
     }
diff --git a/extensions/merge-conflict/package.json b/extensions/merge-conflict/package.json
index 5aaa5fce529..74f7b848fa8 100644
--- a/extensions/merge-conflict/package.json
+++ b/extensions/merge-conflict/package.json
@@ -14,6 +14,7 @@
     "Other"
   ],
   "capabilities": {
+    "virtualWorkspaces": false,
     "untrustedWorkspaces": {
       "supported": true
     }
diff --git a/extensions/notebook-markdown-extensions/package.json b/extensions/notebook-markdown-extensions/package.json
index f1cdcaa4c04..61bc0bd8871 100644
--- a/extensions/notebook-markdown-extensions/package.json
+++ b/extensions/notebook-markdown-extensions/package.json
@@ -14,6 +14,9 @@
   "categories": [
     "Other"
   ],
+  "capabilities": {
+    "virtualWorkspaces": false
+  },
   "contributes": {
     "notebookMarkdownRenderer": [
       {
diff --git a/extensions/npm/package.json b/extensions/npm/package.json
index 62aef251187..ab75bdf34eb 100644
--- a/extensions/npm/package.json
+++ b/extensions/npm/package.json
@@ -45,6 +45,7 @@
     "onView:npm"
   ],
   "capabilities": {
+    "virtualWorkspaces": false,
     "untrustedWorkspaces": {
       "supported": "limited",
       "description": "%workspaceTrust%"
diff --git a/extensions/php-language-features/package.json b/extensions/php-language-features/package.json
index 98345bf7614..1559eca758f 100644
--- a/extensions/php-language-features/package.json
+++ b/extensions/php-language-features/package.json
@@ -18,6 +18,7 @@
     "Programming Languages"
   ],
   "capabilities": {
+    "virtualWorkspaces": false,
     "untrustedWorkspaces": {
       "supported": "limited",
       "description": "%workspaceTrust%"