diff --git a/PARR.AIHITRelationshipsSyncerWorker/Dockerfile b/PARR.AIHITRelationshipsSyncerWorker/Dockerfile
index 86b0b3bd..776be4ce 100644
--- a/PARR.AIHITRelationshipsSyncerWorker/Dockerfile
+++ b/PARR.AIHITRelationshipsSyncerWorker/Dockerfile
@@ -39,6 +39,7 @@ COPY --from=publish /app/publish .
 ENV DOTNET_AppContext_Switch_System_Net_Security_UseUnsafeOldTlsRuntimeBehavior=true
 ENV DOTNET_SYSTEM_NET_SECURITY_ALLOWUNSECUREDEFAULTS=true
 ENV DOTNET_AppContext_Switch_System_Net_Security_TlsSupport=3072
+ENV DOTNET_AppContext_Switch_Microsoft_Data_SqlClient_UseOldTlsValue=true
 
 # 2. Настройки для системного OpenSSL 3
 ENV OPENSSL_SYSTEM_DEFAULT_MIN_PROTOCOL=TLSv1
diff --git a/PARR.AIHITRelationshipsSyncerWorker/appsettings.json b/PARR.AIHITRelationshipsSyncerWorker/appsettings.json
index 587d5bfb..e35f77a5 100644
--- a/PARR.AIHITRelationshipsSyncerWorker/appsettings.json
+++ b/PARR.AIHITRelationshipsSyncerWorker/appsettings.json
@@ -1,6 +1,6 @@
 {
     "ConnectionStrings": {
-        "AihitConnection": "Data Source=10.248.19.97; Initial Catalog=mao2;User ID=awhit-ipp-parr;pwd=ET3h$9y1LH#D;Encrypt=false;TrustServerCertificate=true;",
+        "AihitConnection": "Data Source=10.248.19.97; Initial Catalog=mao2;User ID=awhit-ipp-parr;pwd=ET3h$9y1LH#D;Encrypt=false;TrustServerCertificate=true;MultiSubnetFailover=True;",
         "DefaultConnection": "Server=10.99.253.184;Database=parr;User Id=app_parr; Password=PosdfkhT&)%sdfligL&%5546;"
     },
     "Logging": {