diff --git a/packages/nest/test/open-feature.module.spec.ts b/packages/nest/test/open-feature.module.spec.ts
index 38e23c5867..c0dc785fb4 100644
--- a/packages/nest/test/open-feature.module.spec.ts
+++ b/packages/nest/test/open-feature.module.spec.ts
@@ -19,25 +19,6 @@ describe('OpenFeatureModule', () => {
       await moduleRef.close();
     });
 
-    describe('without configured providers', () => {
-      let moduleWithoutProvidersRef: TestingModule;
-      beforeAll(async () => {
-        moduleWithoutProvidersRef = await Test.createTestingModule({
-          imports: [OpenFeatureModule.forRoot({})],
-        }).compile();
-      });
-
-      afterAll(async () => {
-        await moduleWithoutProvidersRef.close();
-      });
-
-      it('should return the SDKs default provider and not throw', async () => {
-        expect(() => {
-          moduleWithoutProvidersRef.get<Client>(getOpenFeatureClientToken());
-        }).not.toThrow();
-      });
-    });
-
     it('should return the default provider', async () => {
       const client = moduleRef.get<Client>(getOpenFeatureClientToken());
       expect(client).toBeDefined();
@@ -91,6 +72,27 @@ describe('OpenFeatureModule', () => {
         OpenFeature.clearHooks();
       }
     });
+
+    // Placed after provider-dependent tests: closing this inner module calls OpenFeature.close()
+    // which now fully resets API state per spec requirement 1.6.2.
+    describe('without configured providers', () => {
+      let moduleWithoutProvidersRef: TestingModule;
+      beforeAll(async () => {
+        moduleWithoutProvidersRef = await Test.createTestingModule({
+          imports: [OpenFeatureModule.forRoot({})],
+        }).compile();
+      });
+
+      afterAll(async () => {
+        await moduleWithoutProvidersRef.close();
+      });
+
+      it('should return the SDKs default provider and not throw', async () => {
+        expect(() => {
+          moduleWithoutProvidersRef.get<Client>(getOpenFeatureClientToken());
+        }).not.toThrow();
+      });
+    });
   });
 
   describe('handlers', () => {
diff --git a/packages/server/src/open-feature.ts b/packages/server/src/open-feature.ts
index 1bc491937d..511325134e 100644
--- a/packages/server/src/open-feature.ts
+++ b/packages/server/src/open-feature.ts
@@ -219,6 +219,13 @@ export class OpenFeatureAPI
     );
   }
 
+  async close(): Promise<void> {
+    await super.close();
+    this._domainScopedProviders.clear();
+    this._defaultProvider = new ProviderWrapper(NOOP_PROVIDER, ProviderStatus.NOT_READY, this._statusEnumType);
+    this._transactionContextPropagator = NOOP_TRANSACTION_CONTEXT_PROPAGATOR;
+  }
+
   /**
    * Clears all registered providers and resets the default provider.
    * @returns {Promise<void>}
diff --git a/packages/server/test/open-feature.spec.ts b/packages/server/test/open-feature.spec.ts
index fe41f83542..8e91e3d475 100644
--- a/packages/server/test/open-feature.spec.ts
+++ b/packages/server/test/open-feature.spec.ts
@@ -1,6 +1,6 @@
 import type { Paradigm } from '@openfeature/core';
-import type { Provider, ProviderStatus } from '../src';
-import { OpenFeature, OpenFeatureAPI } from '../src';
+import type { Hook, Provider, ProviderStatus, TransactionContextPropagator } from '../src';
+import { NOOP_PROVIDER, OpenFeature, OpenFeatureAPI, ProviderEvents } from '../src';
 import { OpenFeatureClient } from '../src/client/internal/open-feature-client';
 
 const mockProvider = (config?: { initialStatus?: ProviderStatus; runsOn?: Paradigm }) => {
@@ -230,4 +230,102 @@ describe('OpenFeature', () => {
       expect(provider3.onClose).toHaveBeenCalled();
     });
   });
+
+  describe('Requirement 1.6.2', () => {
+    it('resets the default provider to no-op after close()', async () => {
+      const provider = mockProvider();
+      OpenFeature.setProvider(provider);
+      expect(OpenFeature.providerMetadata.name).toBe('mock-events-success');
+      await OpenFeature.close();
+      expect(OpenFeature.providerMetadata.name).toBe(NOOP_PROVIDER.metadata.name);
+    });
+
+    it('clears domain-scoped providers after close()', async () => {
+      const provider = mockProvider();
+      OpenFeature.setProvider('domain1', provider);
+      expect(OpenFeature.getProvider('domain1')).toBe(provider);
+      await OpenFeature.close();
+      expect(OpenFeature.getProvider('domain1').metadata.name).toBe(NOOP_PROVIDER.metadata.name);
+    });
+
+    it('clears global hooks after close()', async () => {
+      const hook = { before: jest.fn() } as unknown as Hook;
+      OpenFeature.addHooks(hook);
+      expect(OpenFeature.getHooks()).toHaveLength(1);
+      await OpenFeature.close();
+      expect(OpenFeature.getHooks()).toHaveLength(0);
+    });
+
+    it('clears global evaluation context after close()', async () => {
+      OpenFeature.setContext({ user: 'test' });
+      expect(OpenFeature.getContext()).toEqual({ user: 'test' });
+      await OpenFeature.close();
+      expect(OpenFeature.getContext()).toEqual({});
+    });
+
+    it('removes API-level event handlers after close()', async () => {
+      const handler = jest.fn();
+      OpenFeature.addHandler(ProviderEvents.Ready, handler);
+      expect(OpenFeature.getHandlers(ProviderEvents.Ready)).toHaveLength(1);
+      await OpenFeature.close();
+      expect(OpenFeature.getHandlers(ProviderEvents.Ready)).toHaveLength(0);
+    });
+
+    it('resets the transaction context propagator to the default after close()', async () => {
+      const customPropagator: TransactionContextPropagator = {
+        getTransactionContext: jest.fn(() => ({ custom: true })),
+        setTransactionContext: jest.fn(),
+      };
+      OpenFeature.setTransactionContextPropagator(customPropagator);
+      expect(OpenFeature.getTransactionContext()).toEqual({ custom: true });
+      await OpenFeature.close();
+      expect(OpenFeature.getTransactionContext()).toEqual({});
+    });
+
+    it('calls provider onClose only once when the same provider instance is registered in multiple scopes', async () => {
+      const provider = mockProvider();
+      OpenFeature.setProvider(provider);
+      OpenFeature.setProvider('domain1', provider);
+      await OpenFeature.close();
+      expect(provider.onClose).toHaveBeenCalledTimes(1);
+    });
+  });
+
+  describe('clearProviders() remains provider-only', () => {
+    afterEach(async () => {
+      OpenFeature.clearHooks();
+      OpenFeature.clearHandlers();
+      OpenFeature.setContext({});
+    });
+
+    it('does not clear global hooks', async () => {
+      const hook = { before: jest.fn() } as unknown as Hook;
+      OpenFeature.addHooks(hook);
+      await OpenFeature.clearProviders();
+      expect(OpenFeature.getHooks()).toHaveLength(1);
+    });
+
+    it('does not clear global evaluation context', async () => {
+      OpenFeature.setContext({ user: 'test' });
+      await OpenFeature.clearProviders();
+      expect(OpenFeature.getContext()).toEqual({ user: 'test' });
+    });
+
+    it('does not remove API-level event handlers', async () => {
+      const handler = jest.fn();
+      OpenFeature.addHandler(ProviderEvents.Ready, handler);
+      await OpenFeature.clearProviders();
+      expect(OpenFeature.getHandlers(ProviderEvents.Ready)).toHaveLength(1);
+    });
+
+    it('does not reset the transaction context propagator', async () => {
+      const customPropagator: TransactionContextPropagator = {
+        getTransactionContext: jest.fn(() => ({ custom: true })),
+        setTransactionContext: jest.fn(),
+      };
+      OpenFeature.setTransactionContextPropagator(customPropagator);
+      await OpenFeature.clearProviders();
+      expect(OpenFeature.getTransactionContext()).toEqual({ custom: true });
+    });
+  });
 });
diff --git a/packages/shared/src/open-feature.ts b/packages/shared/src/open-feature.ts
index 00142b5670..d491cac450 100644
--- a/packages/shared/src/open-feature.ts
+++ b/packages/shared/src/open-feature.ts
@@ -395,28 +395,18 @@ export abstract class OpenFeatureCommonAPI<
   }
 
   async close(): Promise<void> {
-    try {
-      await this?._defaultProvider.provider?.onClose?.();
-    } catch (err) {
-      this.handleShutdownError(this._defaultProvider.provider, err);
-    }
-
-    const wrappers = Array.from(this._domainScopedProviders);
-
-    await Promise.all(
-      wrappers.map(async ([, wrapper]) => {
-        try {
-          await wrapper?.provider.onClose?.();
-        } catch (err) {
-          this.handleShutdownError(wrapper?.provider, err);
-        }
-      }),
-    );
+    await this._shutdownAllProviders();
+    this._hooks = [];
+    this._context = {};
+    this._domainScopedContext.clear();
+    this._clientEventHandlers.clear();
+    this._clientEvents.clear();
+    this._apiEmitter.removeAllHandlers();
   }
 
   protected async clearProvidersAndSetDefault(defaultProvider: P): Promise<void> {
     try {
-      await this.close();
+      await this._shutdownAllProviders();
     } catch (err) {
       this._logger.error('Unable to cleanly close providers. Resetting to the default configuration.');
     } finally {
@@ -429,6 +419,23 @@ export abstract class OpenFeatureCommonAPI<
     }
   }
 
+  private async _shutdownAllProviders(): Promise<void> {
+    const uniqueProviders = new Set<P>([
+      this._defaultProvider.provider,
+      ...Array.from(this._domainScopedProviders.values()).map((wrapper) => wrapper.provider),
+    ]);
+
+    await Promise.all(
+      Array.from(uniqueProviders).map(async (provider) => {
+        try {
+          await provider?.onClose?.();
+        } catch (err) {
+          this.handleShutdownError(provider, err);
+        }
+      }),
+    );
+  }
+
   private get allProviders(): P[] {
     return [
       ...[...this._domainScopedProviders.values()].map((wrappers) => wrappers.provider),
diff --git a/packages/web/src/open-feature.ts b/packages/web/src/open-feature.ts
index 131f8c2731..9d378dc062 100644
--- a/packages/web/src/open-feature.ts
+++ b/packages/web/src/open-feature.ts
@@ -361,13 +361,18 @@ export class OpenFeatureAPI
     );
   }
 
+  async close(): Promise<void> {
+    await super.close();
+    this._domainScopedProviders.clear();
+    this._defaultProvider = new ProviderWrapper(NOOP_PROVIDER, ProviderStatus.NOT_READY, this._statusEnumType);
+  }
+
   /**
    * Clears all registered providers and resets the default provider.
    * @returns {Promise<void>}
    */
   async clearProviders(): Promise<void> {
     await super.clearProvidersAndSetDefault(NOOP_PROVIDER);
-    this._domainScopedContext.clear();
   }
 
   private async runProviderContextChangeHandler(
diff --git a/packages/web/test/open-feature.spec.ts b/packages/web/test/open-feature.spec.ts
index 308d8f43b4..e6af0eedb2 100644
--- a/packages/web/test/open-feature.spec.ts
+++ b/packages/web/test/open-feature.spec.ts
@@ -1,6 +1,6 @@
 import type { Paradigm } from '@openfeature/core';
-import type { Provider } from '../src';
-import { OpenFeature, OpenFeatureAPI, ProviderStatus } from '../src';
+import type { Hook, Provider } from '../src';
+import { NOOP_PROVIDER, OpenFeature, OpenFeatureAPI, ProviderEvents, ProviderStatus } from '../src';
 import { OpenFeatureClient } from '../src/client/internal/open-feature-client';
 
 const mockProvider = (config?: { initialStatus?: ProviderStatus; runsOn?: Paradigm }) => {
@@ -256,4 +256,95 @@ describe('OpenFeature', () => {
       });
     });
   });
+
+  describe('Requirement 1.6.2', () => {
+    it('resets the default provider to no-op after close()', async () => {
+      const provider = mockProvider();
+      OpenFeature.setProvider(provider);
+      expect(OpenFeature.providerMetadata.name).toBe('mock-events-success');
+      await OpenFeature.close();
+      expect(OpenFeature.providerMetadata.name).toBe(NOOP_PROVIDER.metadata.name);
+    });
+
+    it('clears domain-scoped providers after close()', async () => {
+      const provider = mockProvider();
+      OpenFeature.setProvider('domain1', provider);
+      expect(OpenFeature.getProvider('domain1')).toBe(provider);
+      await OpenFeature.close();
+      expect(OpenFeature.getProvider('domain1').metadata.name).toBe(NOOP_PROVIDER.metadata.name);
+    });
+
+    it('clears global hooks after close()', async () => {
+      const hook = { before: jest.fn() } as unknown as Hook;
+      OpenFeature.addHooks(hook);
+      expect(OpenFeature.getHooks()).toHaveLength(1);
+      await OpenFeature.close();
+      expect(OpenFeature.getHooks()).toHaveLength(0);
+    });
+
+    it('clears global evaluation context after close()', async () => {
+      await OpenFeature.setContext({ user: 'test' });
+      expect(OpenFeature.getContext()).toEqual({ user: 'test' });
+      await OpenFeature.close();
+      expect(OpenFeature.getContext()).toEqual({});
+    });
+
+    it('clears domain-scoped evaluation context after close()', async () => {
+      await OpenFeature.setContext('domain1', { user: 'test' });
+      expect(OpenFeature.getContext('domain1')).toEqual({ user: 'test' });
+      await OpenFeature.close();
+      expect(OpenFeature.getContext('domain1')).toEqual({});
+    });
+
+    it('removes API-level event handlers after close()', async () => {
+      const handler = jest.fn();
+      OpenFeature.addHandler(ProviderEvents.Ready, handler);
+      expect(OpenFeature.getHandlers(ProviderEvents.Ready)).toHaveLength(1);
+      await OpenFeature.close();
+      expect(OpenFeature.getHandlers(ProviderEvents.Ready)).toHaveLength(0);
+    });
+
+    it('calls provider onClose only once when the same provider instance is registered in multiple scopes', async () => {
+      const provider = mockProvider();
+      OpenFeature.setProvider(provider);
+      OpenFeature.setProvider('domain1', provider);
+      await OpenFeature.close();
+      expect(provider.onClose).toHaveBeenCalledTimes(1);
+    });
+  });
+
+  describe('clearProviders() remains provider-only', () => {
+    afterEach(async () => {
+      OpenFeature.clearHooks();
+      OpenFeature.clearHandlers();
+      await OpenFeature.setContext({});
+    });
+
+    it('does not clear global hooks', async () => {
+      const hook = { before: jest.fn() } as unknown as Hook;
+      OpenFeature.addHooks(hook);
+      await OpenFeature.clearProviders();
+      expect(OpenFeature.getHooks()).toHaveLength(1);
+    });
+
+    it('does not clear global evaluation context', async () => {
+      await OpenFeature.setContext({ user: 'test' });
+      await OpenFeature.clearProviders();
+      expect(OpenFeature.getContext()).toEqual({ user: 'test' });
+    });
+
+    it('does not remove API-level event handlers', async () => {
+      const handler = jest.fn();
+      OpenFeature.addHandler(ProviderEvents.Ready, handler);
+      await OpenFeature.clearProviders();
+      expect(OpenFeature.getHandlers(ProviderEvents.Ready)).toHaveLength(1);
+    });
+
+    it('does not clear domain-scoped evaluation context', async () => {
+      await OpenFeature.setContext('domain1', { user: 'test' });
+      await OpenFeature.clearProviders();
+      expect(OpenFeature.getContext('domain1')).toEqual({ user: 'test' });
+      await OpenFeature.clearContext('domain1');
+    });
+  });
 });