diff --git a/packages/devtools-connect/src/fast-failure-connect.spec.ts b/packages/devtools-connect/src/fast-failure-connect.spec.ts
index 2e20eb41..212098aa 100644
--- a/packages/devtools-connect/src/fast-failure-connect.spec.ts
+++ b/packages/devtools-connect/src/fast-failure-connect.spec.ts
@@ -46,4 +46,71 @@ describe('isFastFailureConnectionError', function () {
       isFastFailureConnectionError(new Error('could not connect')),
     ).to.equal(false);
   });
+
+  describe('isCompassSocketServiceError', function () {
+    class CompassSocketServiceError extends Error {
+      constructor(
+        msg: string,
+        public code: number,
+      ) {
+        super(msg);
+        this.name = 'CompassSocketServiceError';
+      }
+    }
+
+    it('returns true for UNAUTHORIZED (3000)', function () {
+      const error = new CompassSocketServiceError('Unauthorized', 3000);
+      expect(isFastFailureConnectionError(error)).to.equal(true);
+    });
+
+    it('returns true for FORBIDDEN (3003)', function () {
+      const error = new CompassSocketServiceError('Forbidden', 3003);
+      expect(isFastFailureConnectionError(error)).to.equal(true);
+    });
+
+    it('returns true for NOT_FOUND (4004)', function () {
+      const error = new CompassSocketServiceError('Not found', 4004);
+      expect(isFastFailureConnectionError(error)).to.equal(true);
+    });
+
+    it('returns true for VIOLATED_POLICY (1008)', function () {
+      const error = new CompassSocketServiceError('Violated policy', 1008);
+      expect(isFastFailureConnectionError(error)).to.equal(true);
+    });
+
+    it('returns true for DO_NOT_TRY_AGAIN (4101)', function () {
+      const error = new CompassSocketServiceError('Do not try again', 4101);
+      expect(isFastFailureConnectionError(error)).to.equal(true);
+    });
+
+    it('returns false for CompassSocketServiceError with non-fail-fast code', function () {
+      const error = new CompassSocketServiceError('Some other error', 9999);
+      expect(isFastFailureConnectionError(error)).to.equal(false);
+    });
+
+    it('returns true when CompassSocketServiceError is the cause of MongoNetworkError', function () {
+      const cause = new CompassSocketServiceError('Unauthorized', 3000);
+      const error = new MongoNetworkError('Connection failed');
+      (error as any).cause = cause;
+      expect(isFastFailureConnectionError(error)).to.equal(true);
+    });
+
+    it('returns true when CompassSocketServiceError is nested deeply', function () {
+      const cause = new CompassSocketServiceError('Forbidden', 3003);
+      const wrappedError = new Error('Wrapped error');
+      (wrappedError as any).cause = cause;
+      const error = new MongoNetworkError('Connection failed');
+      (error as any).cause = wrappedError;
+      expect(isFastFailureConnectionError(error)).to.equal(true);
+    });
+
+    it('returns true when CompassSocketServiceError is in an AggregateError', function () {
+      const cause = new CompassSocketServiceError('Not found', 4004);
+      const aggregateError = new AggregateError(
+        [new Error('Other error'), cause],
+        'Multiple errors',
+      );
+      expect(isFastFailureConnectionError(aggregateError)).to.equal(true);
+    });
+  });
 });
diff --git a/packages/devtools-connect/src/fast-failure-connect.ts b/packages/devtools-connect/src/fast-failure-connect.ts
index e937af3b..dc792fb3 100644
--- a/packages/devtools-connect/src/fast-failure-connect.ts
+++ b/packages/devtools-connect/src/fast-failure-connect.ts
@@ -1,21 +1,48 @@
 // It probably makes sense to put this into its own package/repository once
 // other tools start using it.
 
+const NODE_SOCKET_NON_RETRY_CODES = [
+  'ECONNREFUSED',
+  'ENOTFOUND',
+  'ENETUNREACH',
+  'EINVAL',
+];
+const COMPASS_SOCKET_SERVICE_NON_RETRY_CODES = [
+  3000, // UNAUTHORIZED
+  3003, // FORBIDDEN
+  4004, // NOT_FOUND
+  1008, // VIOLATED_POLICY
+  4101, // DO_NOT_TRY_AGAIN
+];
+
+const isCompassSocketServiceError = handleNestedErrors(
+  (error: Error & { code?: string | number }): boolean => {
+    if (error.name === 'CompassSocketServiceError') {
+      return (
+        typeof error.code === 'number' &&
+        COMPASS_SOCKET_SERVICE_NON_RETRY_CODES.includes(error.code)
+      );
+    }
+    return false;
+  },
+);
+
 function isFastFailureConnectionSingleError(
-  error: Error & { code?: string },
+  error: Error & { code?: string | number },
 ): boolean {
   switch (error.name) {
     case 'MongoNetworkError':
-      return /\b(ECONNREFUSED|ENOTFOUND|ENETUNREACH|EINVAL)\b/.test(
-        error.message,
-      );
+      return new RegExp(
+        String.raw`\b(${NODE_SOCKET_NON_RETRY_CODES.join('|')})\b`,
+      ).test(error.message);
     case 'MongoError':
       return /The apiVersion parameter is required/.test(error.message);
     default:
       return (
-        ['ECONNREFUSED', 'ENOTFOUND', 'ENETUNREACH', 'EINVAL'].includes(
-          error.code ?? '',
-        ) || isPotentialTLSCertificateError(error)
+        (typeof error.code === 'string' &&
+          NODE_SOCKET_NON_RETRY_CODES.includes(error.code)) ||
+        isPotentialTLSCertificateError(error) ||
+        isCompassSocketServiceError(error)
       );
   }
 }
diff --git a/packages/devtools-connect/tsconfig.json b/packages/devtools-connect/tsconfig.json
index 415b3a29..d52fffc9 100644
--- a/packages/devtools-connect/tsconfig.json
+++ b/packages/devtools-connect/tsconfig.json
@@ -2,7 +2,7 @@
   "extends": "@mongodb-js/tsconfig-devtools/tsconfig.common.json",
   "compilerOptions": {
     "target": "es2020",
-    "lib": ["es2020", "DOM"],
+    "lib": ["es2021", "DOM"],
     "module": "commonjs",
     "moduleResolution": "node"
   }