Do not retry during the initial connection attempt if the resolver throws a RemoteAuthorityResolverError.NotAvailable error

src/vs/platform/remote/common/remoteAuthorityResolver.ts

@@ -64,6 +64,10 @@ export enum RemoteAuthorityResolverErrorCode {
 
 export class RemoteAuthorityResolverError extends ErrorNoTelemetry {
 
+	public static isNotAvailable(err: any): boolean {
+		return (err instanceof RemoteAuthorityResolverError) && err._code === RemoteAuthorityResolverErrorCode.NotAvailable;
+	}
+
 	public static isTemporarilyNotAvailable(err: any): boolean {
 		return (err instanceof RemoteAuthorityResolverError) && err._code === RemoteAuthorityResolverErrorCode.TemporarilyNotAvailable;
 	}

src/vs/workbench/services/extensions/electron-sandbox/electronExtensionService.ts

@@ -431,6 +431,11 @@ export abstract class ElectronExtensionService extends AbstractExtensionService
 					throw err;
 				}
 
+				if (RemoteAuthorityResolverError.isNotAvailable(err)) {
+					// The resolver is not available and asked us to not retry
+					throw err;
+				}
+
 				if (attempt >= MAX_ATTEMPTS) {
 					// Too many failed attempts, give up
 					throw err;