diff --git a/packages/devextreme/js/__internal/core/license/lcp_key_validation/lcp_key_validation.test.ts b/packages/devextreme/js/__internal/core/license/lcp_key_validation/lcp_key_validation.test.ts
index fe8eb8c867d2..49278b396f13 100644
--- a/packages/devextreme/js/__internal/core/license/lcp_key_validation/lcp_key_validation.test.ts
+++ b/packages/devextreme/js/__internal/core/license/lcp_key_validation/lcp_key_validation.test.ts
@@ -17,6 +17,7 @@ import { createProductInfo } from './product_info';
 const DOT_NET_TICKS_EPOCH_OFFSET = 621355968000000000n;
 const DOT_NET_TICKS_PER_MS = 10000n;
 const DEVEXTREME_HTML_JS_BIT = 1n << 54n;
+const DEVEXTREME_ASPNET_BIT = 1n << 17n;
 
 function msToDotNetTicks(ms: number): string {
   return (BigInt(ms) * DOT_NET_TICKS_PER_MS + DOT_NET_TICKS_EPOCH_OFFSET).toString();
@@ -83,4 +84,28 @@ describe('LCP key validation', () => {
 
     expect(token.kind).toBe(TokenKind.verified);
   });
+
+  it('does not accept AspNet-only product bit without compatibility mode', () => {
+    const { parseDevExpressProductKey, TokenKind } = loadParserWithBypassedSignatureCheck();
+    const payload = `meta;251,${DEVEXTREME_ASPNET_BIT};`;
+
+    const token = parseDevExpressProductKey(createLcpSource(payload));
+
+    expect(token.kind).toBe(TokenKind.corrupted);
+    if (token.kind === TokenKind.corrupted) {
+      expect(token.error).toBe('product-kind');
+    }
+  });
+
+  it('accepts AspNet-only product bit in compatibility mode', () => {
+    const { parseDevExpressProductKey, TokenKind } = loadParserWithBypassedSignatureCheck();
+    const payload = `meta;251,${DEVEXTREME_ASPNET_BIT};`;
+
+    const token = parseDevExpressProductKey(createLcpSource(payload), true);
+
+    expect(token.kind).toBe(TokenKind.verified);
+    if (token.kind === TokenKind.verified) {
+      expect(token.payload.maxVersionAllowed).toBe(251);
+    }
+  });
 });
diff --git a/packages/devextreme/js/__internal/core/license/lcp_key_validation/lcp_key_validator.ts b/packages/devextreme/js/__internal/core/license/lcp_key_validation/lcp_key_validator.ts
index 126e6b38c740..82d9a767a566 100644
--- a/packages/devextreme/js/__internal/core/license/lcp_key_validation/lcp_key_validator.ts
+++ b/packages/devextreme/js/__internal/core/license/lcp_key_validation/lcp_key_validator.ts
@@ -13,7 +13,10 @@ import {
   RSA_PUBLIC_KEY_XML,
   SIGN_LENGTH,
 } from './const';
-import { findLatestDevExtremeVersion } from './license_info';
+import {
+  findLatestDevExtremeVersion,
+  findLatestDevExtremeVersionWithAspNetCompatibility,
+} from './license_info';
 import { createProductInfo, type ProductInfo } from './product_info';
 import {
   dotNetTicksToMs,
@@ -65,7 +68,10 @@ function productsFromString(encodedString: string): ParsedProducts {
   }
 }
 
-export function parseDevExpressProductKey(productsLicenseSource: string): Token {
+export function parseDevExpressProductKey(
+  productsLicenseSource: string,
+  allowAspNetProductCompatibility = false,
+): Token {
   if (!isProductOnlyLicense(productsLicenseSource)) {
     return GENERAL_ERROR;
   }
@@ -93,7 +99,9 @@ export function parseDevExpressProductKey(productsLicenseSource: string): Token
       return errorToken;
     }
 
-    const maxVersionAllowed = findLatestDevExtremeVersion({ products });
+    const maxVersionAllowed = allowAspNetProductCompatibility
+      ? findLatestDevExtremeVersionWithAspNetCompatibility({ products })
+      : findLatestDevExtremeVersion({ products });
 
     if (!maxVersionAllowed) {
       return PRODUCT_KIND_ERROR;
diff --git a/packages/devextreme/js/__internal/core/license/lcp_key_validation/license_info.ts b/packages/devextreme/js/__internal/core/license/lcp_key_validation/license_info.ts
index a526a3c61983..87138c44ceae 100644
--- a/packages/devextreme/js/__internal/core/license/lcp_key_validation/license_info.ts
+++ b/packages/devextreme/js/__internal/core/license/lcp_key_validation/license_info.ts
@@ -26,3 +26,17 @@ export function findLatestDevExtremeVersion(info: LicenseInfo): number | undefin
 
   return sorted.find((p) => isProduct(p, ProductKind.DevExtremeHtmlJs))?.version;
 }
+
+export function findLatestDevExtremeVersionWithAspNetCompatibility(
+  info: LicenseInfo,
+): number | undefined {
+  if (!isLicenseValid(info)) {
+    return undefined;
+  }
+
+  const sorted = [...info.products].sort((a, b) => b.version - a.version);
+
+  return sorted
+    .find((p) => isProduct(p, ProductKind.DevExtremeHtmlJs, ProductKind.DevExtremeAspNet))
+    ?.version;
+}
diff --git a/packages/devextreme/js/__internal/core/license/license_validation.test.ts b/packages/devextreme/js/__internal/core/license/license_validation.test.ts
index 310c260a311f..28f5ba3de591 100644
--- a/packages/devextreme/js/__internal/core/license/license_validation.test.ts
+++ b/packages/devextreme/js/__internal/core/license/license_validation.test.ts
@@ -3,6 +3,7 @@ import {
 } from '@jest/globals';
 import config from '@js/core/config';
 import errors from '@js/core/errors';
+import { fullVersion } from '@js/core/version';
 
 import { base } from '../../ui/overlay/z_index';
 import {
@@ -11,12 +12,14 @@ import {
   clearAssertedVersions,
 } from '../../utils/version';
 import { LICENSE_KEY_PLACEHOLDER } from './const';
+import * as productKeyValidator from './lcp_key_validation/lcp_key_validator';
 import {
   parseLicenseKey,
   setLicenseCheckSkipCondition,
   validateLicense,
 } from './license_validation';
 import * as trialPanel from './trial_panel.client';
+import { TokenKind } from './types';
 
 jest.mock('./key', () => ({
   PUBLIC_KEY: {
@@ -583,3 +586,51 @@ describe('assertedVersions integration', () => {
     });
   });
 });
+
+describe('AspNet compatibility gate', () => {
+  const LCP_LICENSE = 'LCPv1mock-license';
+
+  beforeEach(() => {
+    jest.spyOn(errors, 'log').mockImplementation(() => {});
+    jest.spyOn(console, 'warn').mockImplementation(() => {});
+    jest.spyOn(trialPanel, 'renderTrialPanel');
+    setLicenseCheckSkipCondition(false);
+  });
+
+  afterEach(() => {
+    jest.restoreAllMocks();
+    clearAssertedVersions();
+  });
+
+  it('passes AspNet compatibility=true when DevExtreme.AspNet assertion exists', () => {
+    const parseSpy = jest.spyOn(productKeyValidator, 'parseDevExpressProductKey').mockReturnValue({
+      kind: TokenKind.verified,
+      payload: {
+        customerId: 'test',
+        maxVersionAllowed: 999,
+        format: 1,
+      },
+    });
+
+    assertDevExtremeVersion('DevExtreme.AspNet.Core', fullVersion);
+    validateLicense(LCP_LICENSE, fullVersion);
+
+    expect(parseSpy).toHaveBeenCalledWith(LCP_LICENSE, true);
+  });
+
+  it('passes AspNet compatibility=false when there is no AspNet assertion', () => {
+    const parseSpy = jest.spyOn(productKeyValidator, 'parseDevExpressProductKey').mockReturnValue({
+      kind: TokenKind.verified,
+      payload: {
+        customerId: 'test',
+        maxVersionAllowed: 999,
+        format: 1,
+      },
+    });
+
+    assertDevExtremeVersion('DevExtreme.React', fullVersion);
+    validateLicense(LCP_LICENSE, fullVersion);
+
+    expect(parseSpy).toHaveBeenCalledWith(LCP_LICENSE, false);
+  });
+});
diff --git a/packages/devextreme/js/__internal/core/license/license_validation.ts b/packages/devextreme/js/__internal/core/license/license_validation.ts
index 48d75c73d4a4..6d4060a82df8 100644
--- a/packages/devextreme/js/__internal/core/license/license_validation.ts
+++ b/packages/devextreme/js/__internal/core/license/license_validation.ts
@@ -5,6 +5,7 @@ import { fullVersion } from '@js/core/version';
 import type { Version } from '../../utils/version';
 import {
   assertedVersionsCompatible,
+  getAssertedVersions,
   parseVersion,
 } from '../../utils/version';
 import {
@@ -24,14 +25,23 @@ import {
 } from './types';
 
 let validationPerformed = false;
+const ASPNET_ASSERTION_PREFIX = 'devextreme.aspnet';
 
-export function parseLicenseKey(encodedKey: string | undefined): Token {
+function hasAspNetVersionAssertion(): boolean {
+  return getAssertedVersions()
+    .some(({ packageName }) => packageName.toLowerCase().startsWith(ASPNET_ASSERTION_PREFIX));
+}
+
+export function parseLicenseKey(
+  encodedKey: string | undefined,
+  allowAspNetProductCompatibility = false,
+): Token {
   if (encodedKey === undefined) {
     return GENERAL_ERROR;
   }
 
   if (isProductOnlyLicense(encodedKey)) {
-    return parseDevExpressProductKey(encodedKey);
+    return parseDevExpressProductKey(encodedKey, allowAspNetProductCompatibility);
   }
 
   return GENERAL_ERROR;
@@ -77,7 +87,8 @@ function getLicenseCheckParams({
       return { preview, error: 'W0021', warningType: 'old-devextreme-key' };
     }
 
-    const license = parseLicenseKey(licenseKey);
+    const allowAspNetProductCompatibility = hasAspNetVersionAssertion();
+    const license = parseLicenseKey(licenseKey, allowAspNetProductCompatibility);
 
     if (license.kind === TokenKind.corrupted) {
       if (license.error === 'product-kind') {
diff --git a/packages/devextreme/js/__internal/core/license/license_validation_internal.ts b/packages/devextreme/js/__internal/core/license/license_validation_internal.ts
index df552c7a8878..bab460725251 100644
--- a/packages/devextreme/js/__internal/core/license/license_validation_internal.ts
+++ b/packages/devextreme/js/__internal/core/license/license_validation_internal.ts
@@ -1,13 +1,18 @@
 /* eslint-disable @typescript-eslint/no-unused-vars */
 import type { Token } from './types';
 
-// @ts-expect-error - only for internal usage
-export function parseLicenseKey(encodedKey: string | undefined): Token {}
+export function parseLicenseKey(
+  encodedKey: string | undefined,
+  allowAspNetProductCompatibility?: boolean,
+): Token {
+  return undefined as unknown as Token;
+}
 
 export function validateLicense(licenseKey: string, version?: string): void {}
 
-// @ts-expect-error - only for internal usage
-export function peekValidationPerformed(): boolean {}
+export function peekValidationPerformed(): boolean {
+  return false;
+}
 
 export function setLicenseCheckSkipCondition(): void {}