diff --git a/IRaCIS.Core.API/_ServiceExtensions/NewtonsoftJson/JSONTimeZoneConverter.cs b/IRaCIS.Core.API/_ServiceExtensions/NewtonsoftJson/JSONTimeZoneConverter.cs
index ce758306c..0fada0af4 100644
--- a/IRaCIS.Core.API/_ServiceExtensions/NewtonsoftJson/JSONTimeZoneConverter.cs
+++ b/IRaCIS.Core.API/_ServiceExtensions/NewtonsoftJson/JSONTimeZoneConverter.cs
@@ -35,7 +35,9 @@ namespace IRaCIS.Core.API
             else
             {
                 // Default or English date format
-                _dateFormat = "MM/dd/yyyy HH:mm:ss";
+                //_dateFormat = "MM/dd/yyyy HH:mm:ss";
+
+                _dateFormat = "yyyy-MM-dd HH:mm:ss";
             }
 
             #endregion
diff --git a/IRaCIS.Core.API/appsettings.US_Uat_IRC.json b/IRaCIS.Core.API/appsettings.US_Uat_IRC.json
index f04b1dfa2..b0d9c7b34 100644
--- a/IRaCIS.Core.API/appsettings.US_Uat_IRC.json
+++ b/IRaCIS.Core.API/appsettings.US_Uat_IRC.json
@@ -69,7 +69,7 @@
 
     "ChangePassWordDays": 90,
 
-    "OpenLoginMFA": true
+    "OpenLoginMFA": false
   },
 
   "SystemEmailSendConfig": {
diff --git a/IRaCIS.Core.Application/Helper/OSSService.cs b/IRaCIS.Core.Application/Helper/OSSService.cs
index 50d346ab3..f4609a16e 100644
--- a/IRaCIS.Core.Application/Helper/OSSService.cs
+++ b/IRaCIS.Core.Application/Helper/OSSService.cs
@@ -28,6 +28,7 @@ using MassTransit;
 using AlibabaCloud.SDK.Sts20150401;
 using Amazon.SecurityToken;
 using Amazon.SecurityToken.Model;
+using Amazon;
 
 namespace IRaCIS.Core.Application.Helper
 {
@@ -235,13 +236,15 @@ namespace IRaCIS.Core.Application.Helper
                     {
                         var awsConfig = ObjectStoreServiceOptions.AWS;
 
-                        // 提供awsAccessKeyId和awsSecretAccessKey构造凭证
-                        var credentials = new BasicAWSCredentials(AWSTempToken.AccessKeyId, AWSTempToken.SecretAccessKey);
+                        var credentials = new SessionAWSCredentials( AWSTempToken.AccessKeyId, AWSTempToken.SecretAccessKey, AWSTempToken.SessionToken);
+
+
 
                         //提供awsEndPoint（域名）进行访问配置
                         var clientConfig = new AmazonS3Config
                         {
-                            ServiceURL = awsConfig.EndPoint
+                            RegionEndpoint = RegionEndpoint.USEast1,
+                            UseHttp =true,
                         };
 
                         var amazonS3Client = new AmazonS3Client(credentials, clientConfig);
diff --git a/IRaCIS.Core.Application/Service/QC/ClinicalDataService.cs b/IRaCIS.Core.Application/Service/QC/ClinicalDataService.cs
index 6ac863684..c4c186183 100644
--- a/IRaCIS.Core.Application/Service/QC/ClinicalDataService.cs
+++ b/IRaCIS.Core.Application/Service/QC/ClinicalDataService.cs
@@ -51,7 +51,7 @@ namespace IRaCIS.Core.Application.Contracts
             return await previousHistoryQueryable.ToListAsync();
         }
 
-        [HttpPost("{trialId:guid}")]
+        [HttpPost]
         public async Task<IResponseOutput<Guid>> AddOrUpdatePreviousHistory(PreviousHistoryAddOrEdit addOrEditPreviousHistory)
         {
             await _qCCommon.VerifyIsCRCSubmmitAsync(_subjectVisitRepository, _userInfo, addOrEditPreviousHistory.SubjectVisitId);
diff --git a/IRaCIS.Core.Domain/QC/ClinicalData/PreviousHistory.cs b/IRaCIS.Core.Domain/QC/ClinicalData/PreviousHistory.cs
index 84e40c327..8e57f50bd 100644
--- a/IRaCIS.Core.Domain/QC/ClinicalData/PreviousHistory.cs
+++ b/IRaCIS.Core.Domain/QC/ClinicalData/PreviousHistory.cs
@@ -12,7 +12,7 @@ namespace IRaCIS.Core.Domain.Models
 	 ///PreviousHistory
 	 ///</summary>
 	 [Table("PreviousHistory")]	
-	 public class PreviousHistory : BaseAddAuditEntityWithUserName
+	 public class PreviousHistory : BaseAddAuditEntity
     {
         #region 导航属性
         [JsonIgnore]