diff --git a/web/pgacloud/providers/rds.py b/web/pgacloud/providers/rds.py
index 3cd82de94..cdae8ea7a 100644
--- a/web/pgacloud/providers/rds.py
+++ b/web/pgacloud/providers/rds.py
@@ -9,7 +9,6 @@
 
 """ Amazon RDS PostgreSQL provider """
 
-import configparser
 import os
 import time
 import boto3
@@ -126,7 +125,8 @@ class RdsProvider(AbsProvider):
 
         session = boto3.Session(
             aws_access_key_id=self._access_key,
-            aws_secret_access_key=self._secret_key
+            aws_secret_access_key=self._secret_key,
+            aws_session_token=self._session_token
         )
 
         self._clients['type'] = session.client(type, region_name=args.region)
diff --git a/web/pgadmin/misc/bgprocess/processes.py b/web/pgadmin/misc/bgprocess/processes.py
index bc88abbf3..933a1914e 100644
--- a/web/pgadmin/misc/bgprocess/processes.py
+++ b/web/pgadmin/misc/bgprocess/processes.py
@@ -120,8 +120,13 @@ class BatchProcess(object):
         if 'id' in kwargs:
             self._retrieve_process(kwargs['id'])
         else:
+            _cmd = kwargs['cmd']
+            # Get system's interpreter
+            if kwargs['cmd'] == 'python':
+                _cmd = self._get_python_interpreter()
+
             self._create_process(
-                kwargs['desc'], kwargs['cmd'], kwargs['args']
+                kwargs['desc'], _cmd, kwargs['args']
             )
 
     def _retrieve_process(self, _id):
@@ -246,13 +251,8 @@ class BatchProcess(object):
                 _('The process has already finished and cannot be restarted.')
             )
 
-    def start(self, cb=None):
-        self.check_start_end_time()
-
-        executor = file_quote(os.path.join(
-            os.path.dirname(u_encode(__file__)), 'process_executor.py'
-        ))
-
+    def _get_python_interpreter(self):
+        """Get Python Interpreter"""
         if os.name == 'nt':
             paths = os.environ['PATH'].split(os.pathsep)
 
@@ -261,14 +261,22 @@ class BatchProcess(object):
                 str(paths)
             )
 
-            interpreter = self.get_interpreter(paths)
+            interpreter = self.get_windows_interpreter(paths)
         else:
             interpreter = sys.executable
 
-        cmd = [
-            interpreter if interpreter is not None else 'python',
-            executor, self.cmd
-        ]
+        return interpreter if interpreter else 'python'
+
+    def start(self, cb=None):
+        self.check_start_end_time()
+
+        executor = file_quote(os.path.join(
+            os.path.dirname(u_encode(__file__)), 'process_executor.py'
+        ))
+
+        interpreter = self._get_python_interpreter()
+
+        cmd = [interpreter, executor, self.cmd]
         cmd.extend(self.args)
 
         current_app.logger.info(
@@ -383,7 +391,7 @@ class BatchProcess(object):
         # Explicitly ignoring signals in the child process
         signal.signal(signal.SIGINT, signal.SIG_IGN)
 
-    def get_interpreter(self, paths):
+    def get_windows_interpreter(self, paths):
         """
         Get interpreter.
         :param paths:
diff --git a/web/pgadmin/misc/cloud/static/js/CloudWizard.jsx b/web/pgadmin/misc/cloud/static/js/CloudWizard.jsx
index f27c43323..2db6ec549 100644
--- a/web/pgadmin/misc/cloud/static/js/CloudWizard.jsx
+++ b/web/pgadmin/misc/cloud/static/js/CloudWizard.jsx
@@ -87,7 +87,7 @@ export default function CloudWizard({ nodeInfo, nodeData }) {
             var _url = url_for('cloud.get_aws_db_instances') ;
 
             if (engine) _url += '?eng_version=' + engine;
-            if (reload) {
+            if (reload || options === undefined || options.length == 0) {
               api.get(_url)
                 .then(res=>{
                   let data = res.data.data;
diff --git a/web/pgadmin/misc/cloud/static/js/cloud_db_details_schema.ui.js b/web/pgadmin/misc/cloud/static/js/cloud_db_details_schema.ui.js
index 08cd32437..08487d88a 100644
--- a/web/pgadmin/misc/cloud/static/js/cloud_db_details_schema.ui.js
+++ b/web/pgadmin/misc/cloud/static/js/cloud_db_details_schema.ui.js
@@ -200,9 +200,9 @@ export class InstanceSchema extends BaseUISchema {
       deps: ['aws_db_version', 'aws_db_instance_class'],
       depChange: (state, source)=> {
         if (source[0] == 'aws_db_instance_class') {
-          state.reload_instances = false;
+          return {reload_instances: false};
         } else {
-          state.reload_instances = true;
+          return {reload_instances: true};
         }
       },
       type: (state) => {
@@ -215,6 +215,7 @@ export class InstanceSchema extends BaseUISchema {
           controlProps: {
             allowClear: false,
             filter: (options) => {
+              if (options.length == 0) return;
               let pattern = 'db.m';
               let pattern_1 = 'db.m';
 
@@ -260,26 +261,31 @@ export class StorageSchema extends BaseUISchema {
       },{
         id: 'aws_storage_size', label: gettext('Allocated storage'), type: 'text',
         mode: ['create'], noEmpty: true, deps: ['aws_storage_type'],
-        depChange: (state)=> {
-          if(state.aws_storage_type === 'io1') {
-            state.aws_storage_size = 100;
-          } else if(state.aws_storage_type === 'gp2') {
-            state.aws_storage_size = 20;
-          } else {
-            state.aws_storage_size = 5;
-          }
+        depChange: (state, source)=> {
+          if (source[0] !== 'aws_storage_size')
+            if(state.aws_storage_type === 'io1') {
+              return {aws_storage_size: 100};
+            } else if(state.aws_storage_type === 'gp2') {
+              return {aws_storage_size: 20};
+            } else {
+              return {aws_storage_size: 5};
+            }
         },
         helpMessage: gettext('Size in GiB.')
       }, {
         id: 'aws_storage_IOPS', label: gettext('Provisioned IOPS'), type: 'text',
         mode: ['create'],
         visible: (state) => {
-          if(state.aws_storage_type === 'io1') {
-            state.aws_storage_IOPS = 3000;
-            return true;
-          }
+          if(state.aws_storage_type === 'io1') return true;
           return false;
-        } , deps: ['aws_storage_type']
+        } , deps: ['aws_storage_type'],
+        depChange: (state, source) => {
+          if (source[0] !== 'aws_storage_IOPS') {
+            if(state.aws_storage_type === 'io1') {
+              return {aws_storage_IOPS: 3000};
+            }
+          }
+        },
       },
     ];
   }
diff --git a/web/pgadmin/misc/cloud/utils/aws_regions.py b/web/pgadmin/misc/cloud/utils/aws_regions.py
new file mode 100644
index 000000000..785ae9c21
--- /dev/null
+++ b/web/pgadmin/misc/cloud/utils/aws_regions.py
@@ -0,0 +1,36 @@
+# ##########################################################################
+# #
+# # pgAdmin 4 - PostgreSQL Tools
+# #
+# # Copyright (C) 2013 - 2022, The pgAdmin Development Team
+# # This software is released under the PostgreSQL Licence
+# #
+# ##########################################################################
+#
+# # AWS Regions
+
+
+AWS_REGIONS = {
+    'us-gov-east-1': 'AWS GovCloud (US-East)',
+    'us-gov-west-1': 'AWS GovCloud (US-West)',
+    'ap-east-1': 'Asia Pacific (Hong Kong)',
+    'ap-south-': 'Asia Pacific (Mumbai)',
+    'ap-northeast-3': 'Asia Pacific (Osaka-Local)',
+    'ap-northeast-2': 'Asia Pacific (Seoul)',
+    'ap-southeast-1': 'Asia Pacific (Singapore)',
+    'ap-southeast-2': 'Asia Pacific (Sydney)',
+    'ap-northeast-1': 'Asia Pacific (Tokyo)',
+    'ca-central-1': 'Canada (Central)',
+    'cn-north-1': 'China (Beijing)',
+    'cn-northwest-1': 'China (Ningxia)',
+    'eu-central-1': 'EU (Frankfurt)',
+    'eu-west-1': 'EU (Ireland)',
+    'eu-west-2': 'EU (London)',
+    'eu-west-3': 'EU (Paris)',
+    'eu-north-1': 'EU (Stockholm)',
+    'sa-east-1': 'South America (Sao Paulo)',
+    'us-east-1': 'US East (N. Virginia)',
+    'us-east-2': 'US East (Ohio)',
+    'us-west-1': 'US West (N. California)',
+    'us-west-2': 'US West (Oregon)',
+}
diff --git a/web/pgadmin/misc/cloud/utils/rds.py b/web/pgadmin/misc/cloud/utils/rds.py
index bf81d17d4..177e0aaae 100644
--- a/web/pgadmin/misc/cloud/utils/rds.py
+++ b/web/pgadmin/misc/cloud/utils/rds.py
@@ -13,6 +13,7 @@ import boto3
 import pickle
 from flask import session
 from boto3.session import Session
+from .aws_regions import AWS_REGIONS
 
 
 class RDS():
@@ -163,9 +164,11 @@ def get_aws_regions():
     _session = Session()
     res = _session.get_available_regions('rds')
     regions = []
+
     for value in res:
-        regions.append({
-            'label': value,
-            'value': value
-        })
+        if value in AWS_REGIONS:
+            regions.append({
+                'label': AWS_REGIONS[value] + ' | ' + value,
+                'value': value
+            })
     return True, regions