diff --git a/src/managers/builtin/sysPythonManager.ts b/src/managers/builtin/sysPythonManager.ts
index 9c6946fa..4a2a21f7 100644
--- a/src/managers/builtin/sysPythonManager.ts
+++ b/src/managers/builtin/sysPythonManager.ts
@@ -115,7 +115,7 @@ export class SysPythonManager implements EnvironmentManager {
                 const discard = this.collection.map((c) => c);
 
                 // hit here is fine...
-                this.collection = await refreshPythons(hardRefresh, this.nativeFinder, this.api, this.log, this);
+                this.collection = (await refreshPythons(hardRefresh, this.nativeFinder, this.api, this.log, this)) ?? [];
                 await this.loadEnvMap();
 
                 const args = [
diff --git a/src/managers/builtin/venvManager.ts b/src/managers/builtin/venvManager.ts
index 3c860e1e..fddea059 100644
--- a/src/managers/builtin/venvManager.ts
+++ b/src/managers/builtin/venvManager.ts
@@ -336,14 +336,14 @@ export class VenvManager implements EnvironmentManager {
                     environment: env,
                 }));
 
-                this.collection = await findVirtualEnvironments(
+                this.collection = (await findVirtualEnvironments(
                     hardRefresh,
                     this.nativeFinder,
                     this.api,
                     this.log,
                     this,
                     scope ? [scope] : undefined,
-                );
+                )) ?? [];
                 await this.loadEnvMap();
 
                 const added = this.collection.map((env) => ({ environment: env, kind: EnvironmentChangeKind.add }));
diff --git a/src/managers/conda/condaEnvManager.ts b/src/managers/conda/condaEnvManager.ts
index e004b5d3..1db198b4 100644
--- a/src/managers/conda/condaEnvManager.ts
+++ b/src/managers/conda/condaEnvManager.ts
@@ -95,7 +95,7 @@ export class CondaEnvManager implements EnvironmentManager, Disposable {
                     title: CondaStrings.condaDiscovering,
                 },
                 async () => {
-                    this.collection = await refreshCondaEnvs(false, this.nativeFinder, this.api, this.log, this);
+                    this.collection = (await refreshCondaEnvs(false, this.nativeFinder, this.api, this.log, this)) ?? [];
                     await this.loadEnvMap();
 
                     this._onDidChangeEnvironments.fire(
@@ -246,7 +246,7 @@ export class CondaEnvManager implements EnvironmentManager, Disposable {
                 async () => {
                     this.log.info('Refreshing Conda Environments');
                     const discard = this.collection.map((c) => c);
-                    this.collection = await refreshCondaEnvs(true, this.nativeFinder, this.api, this.log, this);
+                    this.collection = (await refreshCondaEnvs(true, this.nativeFinder, this.api, this.log, this)) ?? [];
 
                     await this.loadEnvMap();
 
@@ -273,7 +273,7 @@ export class CondaEnvManager implements EnvironmentManager, Disposable {
             resolve: (p) => resolveCondaPath(p, this.nativeFinder, this.api, this.log, this),
             startBackgroundInit: () =>
                 withProgress({ location: ProgressLocation.Window, title: CondaStrings.condaDiscovering }, async () => {
-                    this.collection = await refreshCondaEnvs(false, this.nativeFinder, this.api, this.log, this);
+                    this.collection = (await refreshCondaEnvs(false, this.nativeFinder, this.api, this.log, this)) ?? [];
                     await this.loadEnvMap();
                     this._onDidChangeEnvironments.fire(
                         this.collection.map((e) => ({
diff --git a/src/managers/pipenv/pipenvManager.ts b/src/managers/pipenv/pipenvManager.ts
index 411ada9c..3a8a2352 100644
--- a/src/managers/pipenv/pipenvManager.ts
+++ b/src/managers/pipenv/pipenvManager.ts
@@ -102,7 +102,7 @@ export class PipenvManager implements EnvironmentManager, Disposable {
                     title: PipenvStrings.pipenvDiscovering,
                 },
                 async () => {
-                    this.collection = await refreshPipenv(false, this.nativeFinder, this.api, this);
+                    this.collection = (await refreshPipenv(false, this.nativeFinder, this.api, this)) ?? [];
                     await this.loadEnvMap();
 
                     this._onDidChangeEnvironments.fire(
@@ -181,7 +181,7 @@ export class PipenvManager implements EnvironmentManager, Disposable {
             async () => {
                 traceInfo('Refreshing Pipenv Environments');
                 const oldCollection = [...this.collection];
-                this.collection = await refreshPipenv(hardRefresh, this.nativeFinder, this.api, this);
+                this.collection = (await refreshPipenv(hardRefresh, this.nativeFinder, this.api, this)) ?? [];
                 await this.loadEnvMap();
 
                 // Fire change events for environments that were added or removed
@@ -317,7 +317,7 @@ export class PipenvManager implements EnvironmentManager, Disposable {
                 withProgress(
                     { location: ProgressLocation.Window, title: PipenvStrings.pipenvDiscovering },
                     async () => {
-                        this.collection = await refreshPipenv(false, this.nativeFinder, this.api, this);
+                        this.collection = (await refreshPipenv(false, this.nativeFinder, this.api, this)) ?? [];
                         await this.loadEnvMap();
                         this._onDidChangeEnvironments.fire(
                             this.collection.map((e) => ({
diff --git a/src/managers/poetry/poetryManager.ts b/src/managers/poetry/poetryManager.ts
index 5a57f213..31a35e10 100644
--- a/src/managers/poetry/poetryManager.ts
+++ b/src/managers/poetry/poetryManager.ts
@@ -100,7 +100,7 @@ export class PoetryManager implements EnvironmentManager, Disposable {
                     title: PoetryStrings.poetryDiscovering,
                 },
                 async () => {
-                    this.collection = await refreshPoetry(false, this.nativeFinder, this.api, this);
+                    this.collection = (await refreshPoetry(false, this.nativeFinder, this.api, this)) ?? [];
                     await this.loadEnvMap();
 
                     this._onDidChangeEnvironments.fire(
@@ -172,7 +172,7 @@ export class PoetryManager implements EnvironmentManager, Disposable {
                 async () => {
                     traceInfo('Refreshing Poetry Environments');
                     const discard = this.collection.map((c) => c);
-                    this.collection = await refreshPoetry(true, this.nativeFinder, this.api, this);
+                    this.collection = (await refreshPoetry(true, this.nativeFinder, this.api, this)) ?? [];
 
                     await this.loadEnvMap();
 
diff --git a/src/managers/pyenv/pyenvManager.ts b/src/managers/pyenv/pyenvManager.ts
index 1564347b..5602136f 100644
--- a/src/managers/pyenv/pyenvManager.ts
+++ b/src/managers/pyenv/pyenvManager.ts
@@ -100,7 +100,7 @@ export class PyEnvManager implements EnvironmentManager, Disposable {
                     title: PyenvStrings.pyenvDiscovering,
                 },
                 async () => {
-                    this.collection = await refreshPyenv(false, this.nativeFinder, this.api, this);
+                    this.collection = (await refreshPyenv(false, this.nativeFinder, this.api, this)) ?? [];
                     await this.loadEnvMap();
 
                     this._onDidChangeEnvironments.fire(
@@ -170,7 +170,7 @@ export class PyEnvManager implements EnvironmentManager, Disposable {
                 async () => {
                     traceInfo('Refreshing Pyenv Environments');
                     const discard = this.collection.map((c) => c);
-                    this.collection = await refreshPyenv(true, this.nativeFinder, this.api, this);
+                    this.collection = (await refreshPyenv(true, this.nativeFinder, this.api, this)) ?? [];
 
                     await this.loadEnvMap();
 
@@ -198,7 +198,7 @@ export class PyEnvManager implements EnvironmentManager, Disposable {
             resolve: (p) => resolvePyenvPath(p, this.nativeFinder, this.api, this),
             startBackgroundInit: () =>
                 withProgress({ location: ProgressLocation.Window, title: PyenvStrings.pyenvDiscovering }, async () => {
-                    this.collection = await refreshPyenv(false, this.nativeFinder, this.api, this);
+                    this.collection = (await refreshPyenv(false, this.nativeFinder, this.api, this)) ?? [];
                     await this.loadEnvMap();
                     this._onDidChangeEnvironments.fire(
                         this.collection.map((e) => ({