diff --git a/ChangeLog.md b/ChangeLog.md
index e61434b27..667995ba2 100644
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -6,6 +6,7 @@
 
 General:
 
+- Fixed shared key authentication signature generation when x-ms-date header is present.
 - Updated lockfile-resolved `axios` from 1.19.0 to 1.20.0 for hardened runtime option handling; no application code changes required.
 - Updated lockfile-resolved `lint-staged` from 17.3.0 to 17.4.1 to pick up `picomatch` 4.0.7 and `tinyexec` 1.3.0; moved `.lintstagedrc` flat-format coverage into `tests/packageScripts.test.ts`.
 - Bumped `morgan` from `^1.11.0` to `^1.12.0` (lockfile resolved to 1.12.0) to remediate CVE-2026-15603 (log forging via Unicode line separators in access log tokens); no Azurite source code changes were required.
diff --git a/src/blob/authentication/BlobSharedKeyAuthenticator.ts b/src/blob/authentication/BlobSharedKeyAuthenticator.ts
index f8fbbbae1..2dcb9169a 100644
--- a/src/blob/authentication/BlobSharedKeyAuthenticator.ts
+++ b/src/blob/authentication/BlobSharedKeyAuthenticator.ts
@@ -83,7 +83,7 @@ export default class BlobSharedKeyAuthenticator implements IAuthenticator {
         this.getHeaderValueToSign(req, HeaderConstants.CONTENT_LENGTH),
         this.getHeaderValueToSign(req, HeaderConstants.CONTENT_MD5),
         this.getHeaderValueToSign(req, HeaderConstants.CONTENT_TYPE),
-        this.getHeaderValueToSign(req, HeaderConstants.DATE),
+        req.getHeader(HeaderConstants.X_MS_DATE) !== undefined ? "" : this.getHeaderValueToSign(req, HeaderConstants.DATE),
         this.getHeaderValueToSign(req, HeaderConstants.IF_MODIFIED_SINCE),
         this.getHeaderValueToSign(req, HeaderConstants.IF_MATCH),
         this.getHeaderValueToSign(req, HeaderConstants.IF_NONE_MATCH),
@@ -151,7 +151,7 @@ export default class BlobSharedKeyAuthenticator implements IAuthenticator {
           this.getHeaderValueToSign(req, HeaderConstants.CONTENT_LENGTH),
           this.getHeaderValueToSign(req, HeaderConstants.CONTENT_MD5),
           this.getHeaderValueToSign(req, HeaderConstants.CONTENT_TYPE),
-          this.getHeaderValueToSign(req, HeaderConstants.DATE),
+          this.getHeaderValueToSign(req, HeaderConstants.X_MS_DATE) ? "" : this.getHeaderValueToSign(req, HeaderConstants.DATE),
           this.getHeaderValueToSign(req, HeaderConstants.IF_MODIFIED_SINCE),
           this.getHeaderValueToSign(req, HeaderConstants.IF_MATCH),
           this.getHeaderValueToSign(req, HeaderConstants.IF_NONE_MATCH),
diff --git a/src/queue/authentication/QueueSharedKeyAuthenticator.ts b/src/queue/authentication/QueueSharedKeyAuthenticator.ts
index 6c779fd6f..f6b9942ce 100644
--- a/src/queue/authentication/QueueSharedKeyAuthenticator.ts
+++ b/src/queue/authentication/QueueSharedKeyAuthenticator.ts
@@ -328,7 +328,7 @@ export default class QueueSharedKeyAuthenticator implements IAuthenticator {
           this.getHeaderValueToSign(req, HeaderConstants.CONTENT_LENGTH),
           this.getHeaderValueToSign(req, HeaderConstants.CONTENT_MD5),
           this.getHeaderValueToSign(req, HeaderConstants.CONTENT_TYPE),
-          this.getHeaderValueToSign(req, HeaderConstants.DATE),
+          this.getHeaderValueToSign(req, HeaderConstants.X_MS_DATE) ? "" : this.getHeaderValueToSign(req, HeaderConstants.DATE),
           this.getHeaderValueToSign(req, HeaderConstants.IF_MODIFIED_SINCE),
           this.getHeaderValueToSign(req, HeaderConstants.IF_MATCH),
           this.getHeaderValueToSign(req, HeaderConstants.IF_NONE_MATCH),
@@ -344,7 +344,7 @@ export default class QueueSharedKeyAuthenticator implements IAuthenticator {
           req.getMethod().toUpperCase(),
           this.getHeaderValueToSign(req, HeaderConstants.CONTENT_MD5),
           this.getHeaderValueToSign(req, HeaderConstants.CONTENT_TYPE),
-          this.getHeaderValueToSign(req, HeaderConstants.DATE)
+          this.getHeaderValueToSign(req, HeaderConstants.X_MS_DATE) ? "" : this.getHeaderValueToSign(req, HeaderConstants.DATE)
         ].join("\n") +
         "\n" +
         this.getCanonicalizedHeadersString(req)
diff --git a/src/table/authentication/TableSharedKeyAuthenticator.ts b/src/table/authentication/TableSharedKeyAuthenticator.ts
index bbded03fd..25fa76e52 100644
--- a/src/table/authentication/TableSharedKeyAuthenticator.ts
+++ b/src/table/authentication/TableSharedKeyAuthenticator.ts
@@ -53,8 +53,8 @@ export default class TableSharedKeyAuthenticator implements IAuthenticator {
         req.getMethod().toUpperCase(),
         this.getHeaderValueToSign(req, HeaderConstants.CONTENT_MD5),
         this.getHeaderValueToSign(req, HeaderConstants.CONTENT_TYPE),
-        this.getHeaderValueToSign(req, HeaderConstants.DATE) ||
-          this.getHeaderValueToSign(req, HeaderConstants.X_MS_DATE)
+        this.getHeaderValueToSign(req, HeaderConstants.X_MS_DATE) ||
+          this.getHeaderValueToSign(req, HeaderConstants.DATE)
       ].join("\n") +
       "\n" +
       this.getCanonicalizedResourceString(
@@ -111,8 +111,8 @@ export default class TableSharedKeyAuthenticator implements IAuthenticator {
         req.getMethod().toUpperCase(),
         this.getHeaderValueToSign(req, HeaderConstants.CONTENT_MD5),
         this.getHeaderValueToSign(req, HeaderConstants.CONTENT_TYPE),
-        this.getHeaderValueToSign(req, HeaderConstants.DATE) ||
-          this.getHeaderValueToSign(req, HeaderConstants.X_MS_DATE)
+        this.getHeaderValueToSign(req, HeaderConstants.X_MS_DATE) ||
+          this.getHeaderValueToSign(req, HeaderConstants.DATE)
       ].join("\n") +
       "\n" +
       this.getCanonicalizedResourceString(
diff --git a/src/table/authentication/TableSharedKeyLiteAuthenticator.ts b/src/table/authentication/TableSharedKeyLiteAuthenticator.ts
index 91914a3ce..194b1bf7d 100644
--- a/src/table/authentication/TableSharedKeyLiteAuthenticator.ts
+++ b/src/table/authentication/TableSharedKeyLiteAuthenticator.ts
@@ -53,8 +53,8 @@ export default class TableSharedKeyLiteAuthenticator implements IAuthenticator {
 
     const stringToSign: string =
       [
-        this.getHeaderValueToSign(req, HeaderConstants.DATE) ||
-          this.getHeaderValueToSign(req, HeaderConstants.X_MS_DATE)
+        this.getHeaderValueToSign(req, HeaderConstants.X_MS_DATE) ||
+          this.getHeaderValueToSign(req, HeaderConstants.DATE)
       ].join("\n") +
       "\n" +
       this.getCanonicalizedResourceString(
@@ -108,8 +108,8 @@ export default class TableSharedKeyLiteAuthenticator implements IAuthenticator {
       // JS/.net Track2 SDK will generate stringToSign from IP style URI with "-secondary" in authenticationPath, so will also compare signature with this kind stringToSignconst stringToSign: string =
       const stringToSign_secondary: string =
       [
-        this.getHeaderValueToSign(req, HeaderConstants.DATE) ||
-          this.getHeaderValueToSign(req, HeaderConstants.X_MS_DATE)
+        this.getHeaderValueToSign(req, HeaderConstants.X_MS_DATE) ||
+          this.getHeaderValueToSign(req, HeaderConstants.DATE)
       ].join("\n") +
       "\n" +
       this.getCanonicalizedResourceString(
diff --git a/tests/table/utils/table.entity.tests.utils.for.rest.ts b/tests/table/utils/table.entity.tests.utils.for.rest.ts
index 21fd03aea..b7c83c001 100644
--- a/tests/table/utils/table.entity.tests.utils.for.rest.ts
+++ b/tests/table/utils/table.entity.tests.utils.for.rest.ts
@@ -52,8 +52,8 @@ export function createStringToSignForSharedKeyLite(
 ): string {
   const stringToSign: string =
     [
-      getHeaderValueToSign(HeaderConstants.DATE, headers) ||
-        getHeaderValueToSign(HeaderConstants.X_MS_DATE, headers)
+      getHeaderValueToSign(HeaderConstants.X_MS_DATE, headers) ||
+        getHeaderValueToSign(HeaderConstants.DATE, headers)
     ].join("\n") +
     "\n" +
     getCanonicalizedResourceString(