diff --git a/client/src/addon_manager/commands/disable.ts b/client/src/addon_manager/commands/disable.ts
index 4f1dea12176451f682c4412a9d709bceaf417d9d..e2b3dcea25a82218ccd83427c62b720dff0b61c4 100644
--- a/client/src/addon_manager/commands/disable.ts
+++ b/client/src/addon_manager/commands/disable.ts
@@ -17,7 +17,7 @@ export default async (context: vscode.ExtensionContext, message: Message) => {
 
     let selectedFolders: vscode.WorkspaceFolder[];
 
-    if (workspaceFolders.length === 1) {
+    if (workspaceFolders && workspaceFolders.length === 1) {
         selectedFolders = [workspaceFolders[0]];
     } else {
         const folderOptions = await addon.getQuickPickerOptions(true);
diff --git a/client/src/addon_manager/commands/enable.ts b/client/src/addon_manager/commands/enable.ts
index 5cb97d8f2d32d8b64f6b048b31cb0e26f0dd8a9e..64dce51b57bb6e0751a3aa3ff6ac676ba591c38e 100644
--- a/client/src/addon_manager/commands/enable.ts
+++ b/client/src/addon_manager/commands/enable.ts
@@ -16,7 +16,7 @@ export default async (context: vscode.ExtensionContext, message: Message) => {
     const workspaceFolders = vscode.workspace.workspaceFolders;
     let selectedFolders: vscode.WorkspaceFolder[];
 
-    if (workspaceFolders.length === 1) {
+    if (workspaceFolders && workspaceFolders.length === 1) {
         selectedFolders = [workspaceFolders[0]];
     } else {
         const folderOptions = await addon.getQuickPickerOptions(false);
diff --git a/client/src/addon_manager/panels/WebVue.ts b/client/src/addon_manager/panels/WebVue.ts
index 673b6ec6b37685553160eec00d827310dc1c9824..8c9c38daa69c4af2a4182f41ac2ec630054a3277 100644
--- a/client/src/addon_manager/panels/WebVue.ts
+++ b/client/src/addon_manager/panels/WebVue.ts
@@ -80,7 +80,7 @@ export class WebVue {
             WebVue.currentPanel = new WebVue(context, panel);
         }
 
-        const workspaceOpen = vscode.workspace.workspaceFolders.length > 0;
+        const workspaceOpen = vscode.workspace.workspaceFolders && vscode.workspace.workspaceFolders.length > 0;
         const clientVersion = context.extension.packageJSON.version;
 
         WebVue.sendMessage("appStore", {
diff --git a/client/src/addon_manager/services/settings.service.ts b/client/src/addon_manager/services/settings.service.ts
index 72214196d2707d4388f71a00a58cf2442c6eadab..0ec2b20dbae16d93a9a247427efb2b42e5f609e7 100644
--- a/client/src/addon_manager/services/settings.service.ts
+++ b/client/src/addon_manager/services/settings.service.ts
@@ -21,6 +21,8 @@ export const getLibraryPaths = async (): Promise<
 > => {
     const result = [];
 
+    if (!vscode.workspace.workspaceFolders) return [];
+
     for (const folder of vscode.workspace.workspaceFolders) {
         const libraries = await getConfig(LIBRARY_SETTING, folder.uri);
         result.push({ folder, paths: libraries ?? [] });