diff --git a/sdk/storage/Azure.Storage.Blobs/CHANGELOG.md b/sdk/storage/Azure.Storage.Blobs/CHANGELOG.md
index c726c4f2f3e1..f1761230304f 100644
--- a/sdk/storage/Azure.Storage.Blobs/CHANGELOG.md
+++ b/sdk/storage/Azure.Storage.Blobs/CHANGELOG.md
@@ -3,6 +3,7 @@
 ## 12.7.0-preview.1 (Unreleased)
 - Fixed bug where Stream returned from AppendBlobClient.OpenWrite(), BlockBlobClient.OpenWrite() and PageBlobClient.OpenWrite() did not flush while disposing preventing compatibility with using keyword.
 - Fixed bug where Listing Blobs with BlobTraits.Metadata would return BlobItems with null metadata instead of an empty dictionary if no metadata was present.
+- Fixed bug where BlobAccessPolicy.StartsOn and .ExpiresOn would cause the process to crash.
 
 ## 12.6.0 (2020-08-31)
 - Fixed bug where BlobClient.Upload(), BlockBlobClient.Upload(), AppendBlobClient.AppendBlock(), and PageBlobClient.UploadPages() would deadlock if the content stream's position was not 0.
diff --git a/sdk/storage/Azure.Storage.Blobs/src/Models/BlobAccessPolicy.cs b/sdk/storage/Azure.Storage.Blobs/src/Models/BlobAccessPolicy.cs
index 2ee4173ee790..2818c4486824 100644
--- a/sdk/storage/Azure.Storage.Blobs/src/Models/BlobAccessPolicy.cs
+++ b/sdk/storage/Azure.Storage.Blobs/src/Models/BlobAccessPolicy.cs
@@ -23,8 +23,8 @@ public System.DateTimeOffset StartsOn
             get
             {
                 return PolicyStartsOn == default ?
-                    StartsOn :
-                    (DateTimeOffset)PolicyStartsOn;
+                    new DateTimeOffset() :
+                    PolicyStartsOn.Value;
             }
             set
             {
@@ -42,8 +42,8 @@ public System.DateTimeOffset ExpiresOn
             get
             {
                 return PolicyExpiresOn == default ?
-                    ExpiresOn :
-                    (DateTimeOffset)PolicyExpiresOn;
+                    new DateTimeOffset() :
+                    PolicyExpiresOn.Value;
             }
             set
             {
diff --git a/sdk/storage/Azure.Storage.Blobs/tests/ContainerClientTests.cs b/sdk/storage/Azure.Storage.Blobs/tests/ContainerClientTests.cs
index fcc6bf86ef18..fe8857455558 100644
--- a/sdk/storage/Azure.Storage.Blobs/tests/ContainerClientTests.cs
+++ b/sdk/storage/Azure.Storage.Blobs/tests/ContainerClientTests.cs
@@ -1004,6 +1004,18 @@ await test.Container.SetAccessPolicyAsync(
             Assert.AreEqual(signedIdentifiers[0].AccessPolicy.Permissions, acl.AccessPolicy.Permissions);
         }
 
+        [Test]
+        public void BlobAccessPolicyNullStartsOnExpiresOnTest()
+        {
+            BlobAccessPolicy accessPolicy = new BlobAccessPolicy()
+            {
+                Permissions = "rw"
+            };
+
+            Assert.AreEqual(new DateTimeOffset(), accessPolicy.StartsOn);
+            Assert.AreEqual(new DateTimeOffset(), accessPolicy.ExpiresOn);
+        }
+
         [Test]
         public async Task SetAccessPolicyAsync_OldProperties()
         {
diff --git a/sdk/storage/Azure.Storage.Blobs/tests/SessionRecords/ContainerClientTests/BlobAccessPolicyNullStartsOnExpiresOnTest.json b/sdk/storage/Azure.Storage.Blobs/tests/SessionRecords/ContainerClientTests/BlobAccessPolicyNullStartsOnExpiresOnTest.json
new file mode 100644
index 000000000000..20e5015d169f
--- /dev/null
+++ b/sdk/storage/Azure.Storage.Blobs/tests/SessionRecords/ContainerClientTests/BlobAccessPolicyNullStartsOnExpiresOnTest.json
@@ -0,0 +1,4 @@
+{
+  "Entries": [],
+  "Variables": {}
+}
\ No newline at end of file
diff --git a/sdk/storage/Azure.Storage.Blobs/tests/SessionRecords/ContainerClientTests/BlobAccessPolicyNullStartsOnExpiresOnTestAsync.json b/sdk/storage/Azure.Storage.Blobs/tests/SessionRecords/ContainerClientTests/BlobAccessPolicyNullStartsOnExpiresOnTestAsync.json
new file mode 100644
index 000000000000..20e5015d169f
--- /dev/null
+++ b/sdk/storage/Azure.Storage.Blobs/tests/SessionRecords/ContainerClientTests/BlobAccessPolicyNullStartsOnExpiresOnTestAsync.json
@@ -0,0 +1,4 @@
+{
+  "Entries": [],
+  "Variables": {}
+}
\ No newline at end of file
diff --git a/sdk/storage/Azure.Storage.Files.DataLake/CHANGELOG.md b/sdk/storage/Azure.Storage.Files.DataLake/CHANGELOG.md
index 89cfdc8ada96..7a31ba44b435 100644
--- a/sdk/storage/Azure.Storage.Files.DataLake/CHANGELOG.md
+++ b/sdk/storage/Azure.Storage.Files.DataLake/CHANGELOG.md
@@ -3,6 +3,7 @@
 ## 12.5.0-preview.1 (Unreleased)
 - Fixed bug where Stream returned from DataLakeFileClient.OpenWrite() did not flush while disposing preventing compatibility with using keyword.
 - Fixed bug where DataLakeFileClient.Upload() could not upload read-only files.
+- Fixed bug where DataLakeBlobAccessPolicy.StartsOn and .ExpiresOn would cause the process to crash.
 
 ## 12.4.0 (2020-08-31)
 - Fixed bug where DataLakeFileClient.Upload() would deadlock if the content stream's position was not 0.
diff --git a/sdk/storage/Azure.Storage.Files.DataLake/src/Models/DataLakeAccessPolicy.cs b/sdk/storage/Azure.Storage.Files.DataLake/src/Models/DataLakeAccessPolicy.cs
index f5a767576435..e6b9326948e7 100644
--- a/sdk/storage/Azure.Storage.Files.DataLake/src/Models/DataLakeAccessPolicy.cs
+++ b/sdk/storage/Azure.Storage.Files.DataLake/src/Models/DataLakeAccessPolicy.cs
@@ -32,8 +32,8 @@ public System.DateTimeOffset StartsOn
             get
             {
                 return PolicyStartsOn == default ?
-                    StartsOn :
-                    (DateTimeOffset)PolicyStartsOn;
+                    new DateTimeOffset() :
+                    PolicyStartsOn.Value;
             }
             set
             {
@@ -51,8 +51,8 @@ public System.DateTimeOffset ExpiresOn
             get
             {
                 return PolicyExpiresOn == default ?
-                    ExpiresOn :
-                    (DateTimeOffset)PolicyExpiresOn;
+                    new DateTimeOffset() :
+                    PolicyExpiresOn.Value;
             }
             set
             {
diff --git a/sdk/storage/Azure.Storage.Files.DataLake/tests/FileSystemClientTests.cs b/sdk/storage/Azure.Storage.Files.DataLake/tests/FileSystemClientTests.cs
index 926092be3a56..685a2c9fadc1 100644
--- a/sdk/storage/Azure.Storage.Files.DataLake/tests/FileSystemClientTests.cs
+++ b/sdk/storage/Azure.Storage.Files.DataLake/tests/FileSystemClientTests.cs
@@ -1807,6 +1807,18 @@ await TestHelper.AssertExpectedExceptionAsync<RequestFailedException>(
             }
         }
 
+        [Test]
+        public void DataLakeAccessPolicyNullStartsOnExpiresOnTest()
+        {
+            DataLakeAccessPolicy accessPolicy = new DataLakeAccessPolicy()
+            {
+                Permissions = "rw"
+            };
+
+            Assert.AreEqual(new DateTimeOffset(), accessPolicy.StartsOn);
+            Assert.AreEqual(new DateTimeOffset(), accessPolicy.ExpiresOn);
+        }
+
         [Test]
         [TestCase("!'();[]@&%=+$,#äÄöÖüÜß;")]
         [TestCase("%21%27%28%29%3B%5B%5D%40%26%25%3D%2B%24%2C%23äÄöÖüÜß%3B")]
diff --git a/sdk/storage/Azure.Storage.Files.DataLake/tests/SessionRecords/FileSystemClientTests/DataLakeAccessPolicyNullStartsOnExpiresOnTest.json b/sdk/storage/Azure.Storage.Files.DataLake/tests/SessionRecords/FileSystemClientTests/DataLakeAccessPolicyNullStartsOnExpiresOnTest.json
new file mode 100644
index 000000000000..20e5015d169f
--- /dev/null
+++ b/sdk/storage/Azure.Storage.Files.DataLake/tests/SessionRecords/FileSystemClientTests/DataLakeAccessPolicyNullStartsOnExpiresOnTest.json
@@ -0,0 +1,4 @@
+{
+  "Entries": [],
+  "Variables": {}
+}
\ No newline at end of file
diff --git a/sdk/storage/Azure.Storage.Files.DataLake/tests/SessionRecords/FileSystemClientTests/DataLakeAccessPolicyNullStartsOnExpiresOnTestAsync.json b/sdk/storage/Azure.Storage.Files.DataLake/tests/SessionRecords/FileSystemClientTests/DataLakeAccessPolicyNullStartsOnExpiresOnTestAsync.json
new file mode 100644
index 000000000000..20e5015d169f
--- /dev/null
+++ b/sdk/storage/Azure.Storage.Files.DataLake/tests/SessionRecords/FileSystemClientTests/DataLakeAccessPolicyNullStartsOnExpiresOnTestAsync.json
@@ -0,0 +1,4 @@
+{
+  "Entries": [],
+  "Variables": {}
+}
\ No newline at end of file
diff --git a/sdk/storage/Azure.Storage.Files.Shares/CHANGELOG.md b/sdk/storage/Azure.Storage.Files.Shares/CHANGELOG.md
index f7eae6cac5fa..b2dac7c683fe 100644
--- a/sdk/storage/Azure.Storage.Files.Shares/CHANGELOG.md
+++ b/sdk/storage/Azure.Storage.Files.Shares/CHANGELOG.md
@@ -2,6 +2,7 @@
 
 ## 12.5.0-preview.1 (Unreleased)
 - Fixed bug where Stream returned from ShareFileClient.OpenWrite() did not flush while disposing preventing compatibility with using keyword.
+- Fixed bug where ShareAccessPolicy.StartsOn and .ExpiresOn would cause the process to crash.
 
 ## 12.4.0 (2020-08-31)
 - Fixed bug where ShareFileClient.Upload() and .UploadRange() would deadlock if the content stream's position was not zero.
diff --git a/sdk/storage/Azure.Storage.Files.Shares/src/Models/ShareAccessPolicy.cs b/sdk/storage/Azure.Storage.Files.Shares/src/Models/ShareAccessPolicy.cs
index b35dfb30e23f..6aa188d47f79 100644
--- a/sdk/storage/Azure.Storage.Files.Shares/src/Models/ShareAccessPolicy.cs
+++ b/sdk/storage/Azure.Storage.Files.Shares/src/Models/ShareAccessPolicy.cs
@@ -23,8 +23,8 @@ public System.DateTimeOffset StartsOn
             get
             {
                 return PolicyStartsOn == default ?
-                    StartsOn :
-                    (DateTimeOffset)PolicyStartsOn;
+                    new DateTimeOffset() :
+                    PolicyStartsOn.Value;
             }
             set
             {
@@ -42,8 +42,8 @@ public System.DateTimeOffset ExpiresOn
             get
             {
                 return PolicyExpiresOn == default ?
-                    ExpiresOn :
-                    (DateTimeOffset)PolicyExpiresOn;
+                    new DateTimeOffset() :
+                    PolicyExpiresOn.Value;
             }
             set
             {
diff --git a/sdk/storage/Azure.Storage.Files.Shares/tests/SessionRecords/ShareClientTests/ShareAccessPolicyNullStartsOnExpiresOnTest.json b/sdk/storage/Azure.Storage.Files.Shares/tests/SessionRecords/ShareClientTests/ShareAccessPolicyNullStartsOnExpiresOnTest.json
new file mode 100644
index 000000000000..20e5015d169f
--- /dev/null
+++ b/sdk/storage/Azure.Storage.Files.Shares/tests/SessionRecords/ShareClientTests/ShareAccessPolicyNullStartsOnExpiresOnTest.json
@@ -0,0 +1,4 @@
+{
+  "Entries": [],
+  "Variables": {}
+}
\ No newline at end of file
diff --git a/sdk/storage/Azure.Storage.Files.Shares/tests/SessionRecords/ShareClientTests/ShareAccessPolicyNullStartsOnExpiresOnTestAsync.json b/sdk/storage/Azure.Storage.Files.Shares/tests/SessionRecords/ShareClientTests/ShareAccessPolicyNullStartsOnExpiresOnTestAsync.json
new file mode 100644
index 000000000000..20e5015d169f
--- /dev/null
+++ b/sdk/storage/Azure.Storage.Files.Shares/tests/SessionRecords/ShareClientTests/ShareAccessPolicyNullStartsOnExpiresOnTestAsync.json
@@ -0,0 +1,4 @@
+{
+  "Entries": [],
+  "Variables": {}
+}
\ No newline at end of file
diff --git a/sdk/storage/Azure.Storage.Files.Shares/tests/ShareClientTests.cs b/sdk/storage/Azure.Storage.Files.Shares/tests/ShareClientTests.cs
index 55628f6d6972..f4768894887b 100644
--- a/sdk/storage/Azure.Storage.Files.Shares/tests/ShareClientTests.cs
+++ b/sdk/storage/Azure.Storage.Files.Shares/tests/ShareClientTests.cs
@@ -752,6 +752,18 @@ await TestHelper.AssertExpectedExceptionAsync<RequestFailedException>(
                 e => Assert.AreEqual("ShareNotFound", e.ErrorCode));
         }
 
+        [Test]
+        public void ShareAccessPolicyNullStartsOnExpiresOnTest()
+        {
+            ShareAccessPolicy accessPolicy = new ShareAccessPolicy()
+            {
+                Permissions = "rw"
+            };
+
+            Assert.AreEqual(new DateTimeOffset(), accessPolicy.StartsOn);
+            Assert.AreEqual(new DateTimeOffset(), accessPolicy.ExpiresOn);
+        }
+
         [Test]
         public async Task GetStatisticsAsync()
         {