diff --git a/packages/boot/app-boot/src/profile-resolution/resolver.ts b/packages/boot/app-boot/src/profile-resolution/resolver.ts
index ff3a63c5e8..959482c02a 100644
--- a/packages/boot/app-boot/src/profile-resolution/resolver.ts
+++ b/packages/boot/app-boot/src/profile-resolution/resolver.ts
@@ -963,19 +963,13 @@ export function installProfileResolution(
  * Publish one generation for Harness-owned Workers.
  * @param generation - complete package table and profile scope.
  * @param behavior - enforce or verify the generation in newly created Workers.
- * @param nativeCacheDir - private physical directory used to load the native adapter in a Worker.
  * @returns a disposer restoring the previous thread environment data.
  */
 export function registerWorkerResolution(
   generation: ProfileResolutionGeneration,
   behavior: ProfileResolutionBehavior = 'enforce',
-  nativeCacheDir?: string,
 ): () => void {
   const previous = getEnvironmentData(WORKER_RESOLUTION_KEY)
-  setEnvironmentData(WORKER_RESOLUTION_KEY, {
-    generation,
-    behavior,
-    ...(nativeCacheDir === undefined ? {} : { nativeCacheDir }),
-  })
+  setEnvironmentData(WORKER_RESOLUTION_KEY, { generation, behavior })
   return () => { setEnvironmentData(WORKER_RESOLUTION_KEY, previous) }
 }
diff --git a/packages/boot/app-boot/src/profile-resolution/service.ts b/packages/boot/app-boot/src/profile-resolution/service.ts
index 4b211dc695..3281f42ce5 100644
--- a/packages/boot/app-boot/src/profile-resolution/service.ts
+++ b/packages/boot/app-boot/src/profile-resolution/service.ts
@@ -1,9 +1,7 @@
 /** Package metadata resolved through one profile resolution registration. */
 
-import { existsSync, mkdtempSync, readFileSync, rmSync } from 'node:fs'
-import { rm } from 'node:fs/promises'
+import { existsSync, readFileSync } from 'node:fs'
 import { createRequire } from 'node:module'
-import { tmpdir } from 'node:os'
 import { join } from 'node:path'
 import { Service, type Context } from '@deepseek-ai/cordis'
 import {
@@ -64,47 +62,18 @@ export class PluginPackages extends Service {
   private packages = new Map<string, PluginPackage | undefined>()
   private readonly resolver: ProfileResolutionRegistration | undefined
   private readonly behavior: ProfileResolutionBehavior
-  private readonly nativeCacheDir: string | undefined
   private disposeWorkerResolution: (() => void) | undefined
 
   constructor(ctx: Context, config: PluginPackagesConfig = {}) {
     super(ctx, 'pluginPackages')
     this.behavior = config.behavior ?? 'enforce'
-    /* v8 ignore start -- Linux coverage cannot enter the Windows native-cache lifecycle. */
-    this.nativeCacheDir = config.generation !== undefined && process.platform === 'win32'
-      ? mkdtempSync(join(tmpdir(), 'dsh-profile-resolution-native-'))
-      : undefined
-    /* v8 ignore stop */
     if (config.generation === undefined) return
-    let resolver: ProfileResolutionRegistration
-    try {
-      resolver = installProfileResolution(config.generation, this.behavior)
-    } catch (error) {
-      /* v8 ignore next -- only an unsupported Node Internal can fail before service publication. */
-      if (this.nativeCacheDir !== undefined) rmSync(this.nativeCacheDir, { recursive: true, force: true })
-      /* v8 ignore next -- the unsupported-Node failure is covered by the external version matrix. */
-      throw error
-    }
-    this.disposeWorkerResolution = registerWorkerResolution(
-      config.generation, this.behavior, this.nativeCacheDir,
-    )
+    const resolver = installProfileResolution(config.generation, this.behavior)
+    this.disposeWorkerResolution = registerWorkerResolution(config.generation, this.behavior)
     this.resolver = resolver
-    ctx.effect(() => async () => {
+    ctx.effect(() => () => {
       this.disposeWorkerResolution?.()
       resolver.dispose()
-      /* v8 ignore start -- Linux coverage cannot enter the Windows native-cache lifecycle. */
-      if (this.nativeCacheDir !== undefined) {
-        try {
-          await rm(this.nativeCacheDir, { recursive: true, force: true, maxRetries: 5, retryDelay: 20 })
-        } catch (error) {
-          const code = (error as NodeJS.ErrnoException).code
-          if (code !== 'EBUSY' && code !== 'EPERM' && code !== 'ENOTEMPTY') throw error
-          ctx.logger.warn(
-            `profile package resolution: native cache ${this.nativeCacheDir} remains locked after Worker teardown`,
-          )
-        }
-      }
-      /* v8 ignore stop */
     }, 'profile package resolution')
   }
 
@@ -117,7 +86,7 @@ export class PluginPackages extends Service {
     this.resolver.replace(generation)
     this.packages = new Map()
     this.disposeWorkerResolution?.()
-    this.disposeWorkerResolution = registerWorkerResolution(generation, this.behavior, this.nativeCacheDir)
+    this.disposeWorkerResolution = registerWorkerResolution(generation, this.behavior)
   }
 
   /**
diff --git a/packages/boot/app-boot/src/profile-resolution/worker-bootstrap.ts b/packages/boot/app-boot/src/profile-resolution/worker-bootstrap.ts
index 6a6f5cbfdc..f7258d42f3 100644
--- a/packages/boot/app-boot/src/profile-resolution/worker-bootstrap.ts
+++ b/packages/boot/app-boot/src/profile-resolution/worker-bootstrap.ts
@@ -9,15 +9,5 @@ const registration = getEnvironmentData(
 ) as {
   generation: ProfileResolutionGeneration
   behavior: ProfileResolutionBehavior
-  nativeCacheDir?: string
 } | undefined
-if (registration !== undefined) {
-  const previous = process.env.NARB_NATIVE_CACHE_DIR
-  if (registration.nativeCacheDir !== undefined) process.env.NARB_NATIVE_CACHE_DIR = registration.nativeCacheDir
-  try {
-    installProfileResolution(registration.generation, registration.behavior)
-  } finally {
-    if (previous === undefined) delete process.env.NARB_NATIVE_CACHE_DIR
-    else process.env.NARB_NATIVE_CACHE_DIR = previous
-  }
-}
+if (registration !== undefined) installProfileResolution(registration.generation, registration.behavior)
diff --git a/packages/boot/app-boot/tests/profile-resolution-service.spec.ts b/packages/boot/app-boot/tests/profile-resolution-service.spec.ts
index 404cf66f75..62ce14795a 100644
--- a/packages/boot/app-boot/tests/profile-resolution-service.spec.ts
+++ b/packages/boot/app-boot/tests/profile-resolution-service.spec.ts
@@ -1,6 +1,6 @@
 /** Package metadata queries share the active profile resolution generation. */
 
-import { existsSync, mkdirSync, mkdtempSync, realpathSync, rmSync, symlinkSync, writeFileSync } from 'node:fs'
+import { mkdirSync, mkdtempSync, realpathSync, rmSync, symlinkSync, writeFileSync } from 'node:fs'
 import { createRequire } from 'node:module'
 import { tmpdir } from 'node:os'
 import { dirname, join } from 'node:path'
@@ -172,15 +172,8 @@ describe('profile package metadata service', () => {
     const initialWorkerData = getEnvironmentData(key) as {
       generation: ProfileResolutionGeneration
       behavior: string
-      nativeCacheDir?: string
-    }
-    expect(initialWorkerData).toMatchObject({ generation: initial, behavior: 'verify' })
-    if (process.platform === 'win32') {
-      expect(initialWorkerData.nativeCacheDir).toEqual(expect.any(String))
-      expect(existsSync(initialWorkerData.nativeCacheDir as string)).toBe(true)
-    } else {
-      expect(initialWorkerData).not.toHaveProperty('nativeCacheDir')
     }
+    expect(initialWorkerData).toEqual({ generation: initial, behavior: 'verify' })
 
     const added = join(root, 'added')
     const addedAnchor = pkg(added, '2.0.0', 'added-metadata')
@@ -200,7 +193,6 @@ describe('profile package metadata service', () => {
     expect(getEnvironmentData(key)).toEqual({
       generation: next,
       behavior: 'verify',
-      ...(initialWorkerData.nativeCacheDir === undefined ? {} : { nativeCacheDir: initialWorkerData.nativeCacheDir }),
     })
     expect(ctx.pluginPackages.packageOf(
       'added-metadata', pathToFileURL(join(profileDir, 'entry.mjs')).href,
@@ -209,8 +201,5 @@ describe('profile package metadata service', () => {
     await ctx.fiber.dispose()
     contexts.pop()
     expect(getEnvironmentData(key)).toBe(previous)
-    if (initialWorkerData.nativeCacheDir !== undefined) {
-      expect(existsSync(initialWorkerData.nativeCacheDir)).toBe(false)
-    }
   })
 })
diff --git a/packages/boot/app-boot/tests/profile-resolution-worker-bootstrap.spec.ts b/packages/boot/app-boot/tests/profile-resolution-worker-bootstrap.spec.ts
index e1a4ce02c1..a0ab5a7616 100644
--- a/packages/boot/app-boot/tests/profile-resolution-worker-bootstrap.spec.ts
+++ b/packages/boot/app-boot/tests/profile-resolution-worker-bootstrap.spec.ts
@@ -1,19 +1,16 @@
 /** Worker bootstrap installs only the generation inherited from its parent. */
 
-import { afterEach, beforeEach, expect, it, vi } from 'vitest'
+import { beforeEach, expect, it, vi } from 'vitest'
 import type { ProfileResolutionGeneration } from '../src/profile.ts'
 
 const harness = vi.hoisted(() => ({
   data: undefined as {
     generation: ProfileResolutionGeneration
     behavior: 'enforce' | 'verify'
-    nativeCacheDir?: string
   } | undefined,
   install: vi.fn(),
 }))
 
-let previousNativeCacheDir: string | undefined
-
 vi.mock('node:worker_threads', () => ({
   getEnvironmentData: () => harness.data,
 }))
@@ -23,18 +20,11 @@ vi.mock('../src/profile-resolution/resolver.ts', () => ({
 }))
 
 beforeEach(() => {
-  previousNativeCacheDir = process.env.NARB_NATIVE_CACHE_DIR
-  delete process.env.NARB_NATIVE_CACHE_DIR
   harness.data = undefined
   harness.install.mockReset()
   vi.resetModules()
 })
 
-afterEach(() => {
-  if (previousNativeCacheDir === undefined) delete process.env.NARB_NATIVE_CACHE_DIR
-  else process.env.NARB_NATIVE_CACHE_DIR = previousNativeCacheDir
-})
-
 it('does nothing without inherited profile resolution data', async () => {
   await import('../src/profile-resolution/worker-bootstrap.ts')
   expect(harness.install).not.toHaveBeenCalled()
@@ -47,24 +37,7 @@ it('installs the inherited generation and behavior', async () => {
     localPackageNames: [],
     entries: [],
   }
-  harness.data = { generation, behavior: 'verify', nativeCacheDir: '/private/native-cache' }
-  harness.install.mockImplementation(() => {
-    expect(process.env.NARB_NATIVE_CACHE_DIR).toBe('/private/native-cache')
-  })
+  harness.data = { generation, behavior: 'verify' }
   await import('../src/profile-resolution/worker-bootstrap.ts')
   expect(harness.install).toHaveBeenCalledWith(generation, 'verify')
-  expect(process.env.NARB_NATIVE_CACHE_DIR).toBeUndefined()
-})
-
-it('restores an existing native-cache environment value after bootstrap', async () => {
-  const generation: ProfileResolutionGeneration = {
-    profilesDir: '/profiles',
-    profileDir: '/profiles/test',
-    localPackageNames: [],
-    entries: [],
-  }
-  process.env.NARB_NATIVE_CACHE_DIR = '/existing/native-cache'
-  harness.data = { generation, behavior: 'enforce' }
-  await import('../src/profile-resolution/worker-bootstrap.ts')
-  expect(process.env.NARB_NATIVE_CACHE_DIR).toBe('/existing/native-cache')
 })
diff --git a/packages/boot/app-boot/tests/profile-resolution.spec.ts b/packages/boot/app-boot/tests/profile-resolution.spec.ts
index a6aa132c9f..8860cc9d40 100644
--- a/packages/boot/app-boot/tests/profile-resolution.spec.ts
+++ b/packages/boot/app-boot/tests/profile-resolution.spec.ts
@@ -1505,16 +1505,6 @@ describe('profile resolution generation', { concurrent: false }, () => {
       dispose()
     }
     expect(getEnvironmentData(key)).toBe(previous)
-
-    const disposeWithCache = registerWorkerResolution(generation, 'enforce', '/private/native-cache')
-    try {
-      expect(getEnvironmentData(key)).toEqual({
-        generation, behavior: 'enforce', nativeCacheDir: '/private/native-cache',
-      })
-    } finally {
-      disposeWithCache()
-    }
-    expect(getEnvironmentData(key)).toBe(previous)
   })
 
   it('restores CommonJS resolution when the registration is disposed', async () => {