diff --git a/packages/angular_devkit/build_angular/src/tools/esbuild/angular/compiler-plugin.ts b/packages/angular_devkit/build_angular/src/tools/esbuild/angular/compiler-plugin.ts
index 4d8dcbb46db6..ff9244e4a8f2 100644
--- a/packages/angular_devkit/build_angular/src/tools/esbuild/angular/compiler-plugin.ts
+++ b/packages/angular_devkit/build_angular/src/tools/esbuild/angular/compiler-plugin.ts
@@ -16,7 +16,7 @@ import type {
   PluginBuild,
 } from 'esbuild';
 import assert from 'node:assert';
-import { realpath } from 'node:fs/promises';
+import { realpathSync } from 'node:fs';
 import * as path from 'node:path';
 import { maxWorkers } from '../../../utils/environment-options';
 import { JavaScriptTransformer } from '../javascript-transformer';
@@ -61,8 +61,11 @@ export function createCompilerPlugin(
       if (!preserveSymlinks) {
         // Use the real path of the tsconfig if not preserving symlinks.
         // This ensures the TS source file paths are based on the real path of the configuration.
+        // NOTE: promises.realpath should not be used here since it uses realpath.native which
+        // can cause case conversion and other undesirable behavior on Windows systems.
+        // ref: https://github.com/nodejs/node/issues/7726
         try {
-          tsconfigPath = await realpath(tsconfigPath);
+          tsconfigPath = realpathSync(tsconfigPath);
         } catch {}
       }