diff --git a/web/pgAdmin4.py b/web/pgAdmin4.py
index ce257ef8a..04c4ffeaa 100644
--- a/web/pgAdmin4.py
+++ b/web/pgAdmin4.py
@@ -15,7 +15,8 @@ to start a web server."""
 import sys
 
 if sys.version_info < (3, 4):
-    raise Exception('This application must be run under Python 3.4 or later.')
+    raise RuntimeError('This application must be run under Python 3.4 '
+                       'or later.')
 
 import builtins
 import os
@@ -163,7 +164,7 @@ def main():
                 "To run the app ensure that yarn install command runs "
                 "successfully"
             )
-            raise Exception("No generated javascript, aborting")
+            raise RuntimeError("No generated javascript, aborting")
 
     # Output a startup message if we're not under the runtime and startup.
     # If we're under WSGI, we don't need to worry about this
diff --git a/web/pgadmin/__init__.py b/web/pgadmin/__init__.py
index 96a88257c..915c286ad 100644
--- a/web/pgadmin/__init__.py
+++ b/web/pgadmin/__init__.py
@@ -340,7 +340,8 @@ def create_app(app_name=None):
                     raise FileNotFoundError(
                         'SQLite database file "' + SQLITE_PATH +
                         '" does not exists.')
-                raise Exception('Specified SQLite database file is not valid.')
+                raise RuntimeError('Specified SQLite database file '
+                                   'is not valid.')
         else:
             schema_version = get_version()
 
diff --git a/web/pgadmin/browser/server_groups/servers/types.py b/web/pgadmin/browser/server_groups/servers/types.py
index ad01c46bd..7decfdc04 100644
--- a/web/pgadmin/browser/server_groups/servers/types.py
+++ b/web/pgadmin/browser/server_groups/servers/types.py
@@ -13,6 +13,7 @@ import sys
 from flask import render_template
 from flask_babelex import gettext as _
 from pgadmin.utils.preferences import Preferences
+from werkzeug.exceptions import InternalServerError
 
 import config
 
@@ -114,7 +115,7 @@ class ServerType(object):
         elif operation == 'sql':
             res = 'psql'
         else:
-            raise Exception(
+            raise InternalServerError(
                 _("Could not find the utility for the operation '%s'").format(
                     operation
                 )
diff --git a/web/pgadmin/feature_tests/file_manager_test.py b/web/pgadmin/feature_tests/file_manager_test.py
index de945eeb4..1045512b9 100644
--- a/web/pgadmin/feature_tests/file_manager_test.py
+++ b/web/pgadmin/feature_tests/file_manager_test.py
@@ -150,8 +150,8 @@ class CheckFileManagerFeatureTest(BaseFeatureTest):
              "#contents th[data-column='0'].tablesorter-headerAsc"))
 
         if not success:
-            raise Exception("Unable to sort in ascending order while clicked "
-                            "on 'Name' column")
+            raise RuntimeError("Unable to sort in ascending order while "
+                               "clicked on 'Name' column")
         # Added time.sleep so that the element to be clicked.
         time.sleep(0.05)
 
@@ -165,7 +165,7 @@ class CheckFileManagerFeatureTest(BaseFeatureTest):
              "#contents th[data-column='0'].tablesorter-headerDesc"))
 
         if not success:
-            raise Exception("Unable to sort in descending order while clicked "
-                            "on 'Name' column")
+            raise RuntimeError("Unable to sort in descending order while "
+                               "clicked on 'Name' column")
 
         self.page.click_modal('Cancel')
diff --git a/web/pgadmin/feature_tests/query_tool_auto_complete_tests.py b/web/pgadmin/feature_tests/query_tool_auto_complete_tests.py
index e45f16055..6bf40754b 100644
--- a/web/pgadmin/feature_tests/query_tool_auto_complete_tests.py
+++ b/web/pgadmin/feature_tests/query_tool_auto_complete_tests.py
@@ -190,5 +190,5 @@ class QueryToolAutoCompleteFeatureTest(BaseFeatureTest):
                 print("Single entry..........")
                 if expected_string not in code_mirror_text:
                     print("single entry exception.........")
-                    raise Exception("Required String %s is not "
-                                    "present" % expected_string)
+                    raise RuntimeError("Required String %s is not "
+                                       "present" % expected_string)
diff --git a/web/pgadmin/feature_tests/xss_checks_pgadmin_debugger_test.py b/web/pgadmin/feature_tests/xss_checks_pgadmin_debugger_test.py
index f0cbf9aff..497a7268b 100644
--- a/web/pgadmin/feature_tests/xss_checks_pgadmin_debugger_test.py
+++ b/web/pgadmin/feature_tests/xss_checks_pgadmin_debugger_test.py
@@ -44,7 +44,7 @@ class CheckDebuggerForXssFeatureTest(BaseFeatureTest):
 
         if test_utils.does_function_exist(self.server, self.test_db,
                                           self.function_name) != 'True':
-            raise Exception("The required function is not found")
+            raise RuntimeError("The required function is not found")
 
     def runTest(self):
         self.page.wait_for_spinner_to_disappear()
diff --git a/web/pgadmin/misc/__init__.py b/web/pgadmin/misc/__init__.py
index a96df4674..c20ce75c3 100644
--- a/web/pgadmin/misc/__init__.py
+++ b/web/pgadmin/misc/__init__.py
@@ -17,6 +17,7 @@ from pgadmin.utils.csrf import pgCSRFProtect
 from pgadmin.utils.session import cleanup_session_files
 from pgadmin.misc.themes import get_all_themes
 import config
+from werkzeug.exceptions import InternalServerError
 
 MODULE_NAME = 'misc'
 
diff --git a/web/pgadmin/misc/bgprocess/processes.py b/web/pgadmin/misc/bgprocess/processes.py
index efaaf2075..362a931ec 100644
--- a/web/pgadmin/misc/bgprocess/processes.py
+++ b/web/pgadmin/misc/bgprocess/processes.py
@@ -204,8 +204,8 @@ class BatchProcess(object):
 
         if self.stime is not None:
             if self.etime is None:
-                raise Exception(_('The process has already been started.'))
-            raise Exception(
+                raise RuntimeError(_('The process has already been started.'))
+            raise RuntimeError(
                 _('The process has already finished and cannot be restarted.')
             )
 
diff --git a/web/pgadmin/misc/file_manager/__init__.py b/web/pgadmin/misc/file_manager/__init__.py
index 89adacf6e..6a23d58b6 100644
--- a/web/pgadmin/misc/file_manager/__init__.py
+++ b/web/pgadmin/misc/file_manager/__init__.py
@@ -19,6 +19,7 @@ from urllib.parse import unquote
 from sys import platform as _platform
 import config
 import codecs
+from werkzeug.exceptions import InternalServerError
 
 import simplejson as json
 from flask import render_template, Response, session, request as req, \
@@ -694,7 +695,7 @@ class Filemanager(object):
             # Do not allow user to access outside his storage dir
             # in server mode.
             if not orig_path.startswith(in_dir):
-                raise Exception(
+                raise InternalServerError(
                     gettext(u"Access denied ({0})").format(path))
         return True
 
diff --git a/web/pgadmin/tools/sqleditor/command.py b/web/pgadmin/tools/sqleditor/command.py
index d856c62bb..1fa7dfe7a 100644
--- a/web/pgadmin/tools/sqleditor/command.py
+++ b/web/pgadmin/tools/sqleditor/command.py
@@ -14,6 +14,7 @@ from collections import OrderedDict
 import six
 from flask import render_template
 from flask_babelex import gettext
+from werkzeug.exceptions import InternalServerError
 from pgadmin.utils.ajax import forbidden
 from pgadmin.utils.driver import get_driver
 from pgadmin.tools.sqleditor.utils.is_query_resultset_updatable \
@@ -195,7 +196,7 @@ class SQLFilter(object):
             self.nsp_name = result['rows'][0]['nspname']
             self.object_name = result['rows'][0]['relname']
         else:
-            raise Exception(gettext(
+            raise InternalServerError(gettext(
                 'Not connected to server or connection with the server '
                 'has been closed.')
             )
@@ -406,7 +407,7 @@ class GridCommand(BaseCommand, SQLFilter, FetchedRowTracker):
             for row in result['rows']:
                 all_columns.append(row['attname'])
         else:
-            raise Exception(
+            raise InternalServerError(
                 gettext('Not connected to server or connection with the '
                         'server has been closed.')
             )
@@ -552,7 +553,7 @@ class TableCommand(GridCommand):
                 # Remove last character from the string
                 pk_names = pk_names[:-1]
         else:
-            raise Exception(
+            raise InternalServerError(
                 gettext('Not connected to server or connection with the '
                         'server has been closed.')
             )
@@ -649,7 +650,7 @@ class TableCommand(GridCommand):
                 raise ExecuteError(has_oids)
 
         else:
-            raise Exception(
+            raise InternalServerError(
                 gettext('Not connected to server or connection with the '
                         'server has been closed.')
             )
@@ -1001,7 +1002,7 @@ class QueryToolCommand(BaseCommand, FetchedRowTracker):
             self.nsp_name = result['rows'][0]['nspname']
             self.object_name = result['rows'][0]['relname']
         else:
-            raise Exception(gettext(
+            raise InternalServerError(gettext(
                 'Not connected to server or connection with the server '
                 'has been closed.')
             )
diff --git a/web/pgadmin/tools/sqleditor/utils/is_query_resultset_updatable.py b/web/pgadmin/tools/sqleditor/utils/is_query_resultset_updatable.py
index 220ca9e91..4270b0289 100644
--- a/web/pgadmin/tools/sqleditor/utils/is_query_resultset_updatable.py
+++ b/web/pgadmin/tools/sqleditor/utils/is_query_resultset_updatable.py
@@ -24,6 +24,7 @@
 from flask import render_template
 from flask_babelex import gettext
 from collections import OrderedDict
+from werkzeug.exceptions import InternalServerError
 
 from pgadmin.tools.sqleditor.utils.get_column_types import get_columns_types
 from pgadmin.utils.exception import ExecuteError
@@ -85,7 +86,7 @@ def is_query_resultset_updatable(conn, sql_path):
             _set_all_columns_not_editable(columns_info=columns_info)
             return return_not_updatable()
     else:
-        raise Exception(
+        raise InternalServerError(
             gettext('Not connected to server or connection with the '
                     'server has been closed.')
         )
diff --git a/web/pgadmin/tools/user_management/__init__.py b/web/pgadmin/tools/user_management/__init__.py
index 96cf4016f..07b924eec 100644
--- a/web/pgadmin/tools/user_management/__init__.py
+++ b/web/pgadmin/tools/user_management/__init__.py
@@ -17,6 +17,7 @@ from flask import render_template, request, \
 from flask_babelex import gettext as _
 from flask_security import login_required, roles_required, current_user
 from flask_security.utils import encrypt_password
+from werkzeug.exceptions import InternalServerError
 
 import config
 from pgadmin.utils import PgAdminModule
@@ -98,7 +99,7 @@ def validate_password(data, new_data):
         if data['newPassword'] == data['confirmPassword']:
             new_data['password'] = encrypt_password(data['newPassword'])
         else:
-            raise Exception(_("Passwords do not match."))
+            raise InternalServerError(_("Passwords do not match."))
 
 
 def validate_user(data):
@@ -115,7 +116,7 @@ def validate_user(data):
         if email_filter.match(data['email']):
             new_data['email'] = data['email']
         else:
-            raise Exception(_("Invalid email address."))
+            raise InternalServerError(_("Invalid email address."))
 
     if 'role' in data and data['role'] != "":
         new_data['roles'] = int(data['role'])
diff --git a/web/pgadmin/utils/driver/psycopg2/__init__.py b/web/pgadmin/utils/driver/psycopg2/__init__.py
index 9d6c5ab64..016e585d7 100644
--- a/web/pgadmin/utils/driver/psycopg2/__init__.py
+++ b/web/pgadmin/utils/driver/psycopg2/__init__.py
@@ -16,6 +16,7 @@ object.
 import datetime
 from flask import session
 from flask_login import current_user
+from werkzeug.exceptions import InternalServerError
 import psycopg2
 from psycopg2.extensions import adapt
 from threading import Lock
@@ -131,7 +132,7 @@ class Driver(BaseDriver):
         if _version:
             return _version
 
-        raise Exception(
+        raise InternalServerError(
             "Driver Version information for psycopg2 is not available!"
         )
 
@@ -143,7 +144,7 @@ class Driver(BaseDriver):
         if version:
             return version
 
-        raise Exception(
+        raise InternalServerError(
             "libpq version information is not available!"
         )
 
diff --git a/web/pgadmin/utils/driver/psycopg2/server_manager.py b/web/pgadmin/utils/driver/psycopg2/server_manager.py
index 742612826..81eb49b23 100644
--- a/web/pgadmin/utils/driver/psycopg2/server_manager.py
+++ b/web/pgadmin/utils/driver/psycopg2/server_manager.py
@@ -16,6 +16,7 @@ import config
 from flask import current_app, session
 from flask_security import current_user
 from flask_babelex import gettext
+from werkzeug.exceptions import InternalServerError
 
 from pgadmin.utils import get_complete_file_path
 from pgadmin.utils.crypto import decrypt
@@ -38,6 +39,7 @@ class ServerManager(object):
     This class contains the information about the given server.
     And, acts as connection manager for that particular session.
     """
+    _INFORMATION_MSG = gettext("Information is not available.")
 
     def __init__(self, server):
         self.connections = dict()
@@ -158,17 +160,17 @@ class ServerManager(object):
     def major_version(self):
         if self.sversion is not None:
             return int(self.sversion / 10000)
-        raise Exception(gettext("Information is not available."))
+        raise InternalServerError(self._INFORMATION_MSG)
 
     def minor_version(self):
         if self.sversion:
             return int(int(self.sversion / 100) % 100)
-        raise Exception(gettext("Information is not available."))
+        raise InternalServerError(self._INFORMATION_MSG)
 
     def patch_version(self):
         if self.sversion:
             return int(int(self.sversion / 100) / 100)
-        raise Exception(gettext("Information is not available."))
+        raise InternalServerError(self._INFORMATION_MSG)
 
     def connection(
             self, database=None, conn_id=None, auto_reconnect=True, did=None,
diff --git a/web/pgadmin/utils/paths.py b/web/pgadmin/utils/paths.py
index 462147cee..efc39a8bd 100644
--- a/web/pgadmin/utils/paths.py
+++ b/web/pgadmin/utils/paths.py
@@ -13,6 +13,7 @@ import os
 
 from flask import current_app, url_for
 from flask_security import current_user, login_required
+from werkzeug.exceptions import InternalServerError
 
 
 @login_required
@@ -81,14 +82,14 @@ def init_app(app):
 
     if storage_dir and not os.path.isdir(storage_dir):
         if os.path.exists(storage_dir):
-            raise Exception(
+            raise InternalServerError(
                 'The path specified for the storage directory is not a '
                 'directory.'
             )
         os.makedirs(storage_dir, int('700', 8))
 
     if storage_dir and not os.access(storage_dir, os.W_OK | os.R_OK):
-        raise Exception(
+        raise InternalServerError(
             'The user does not have permission to read and write to the '
             'specified storage directory.'
         )
diff --git a/web/regression/feature_utils/app_starter.py b/web/regression/feature_utils/app_starter.py
index cf418b67b..fda73f9fb 100644
--- a/web/regression/feature_utils/app_starter.py
+++ b/web/regression/feature_utils/app_starter.py
@@ -58,8 +58,8 @@ class AppStarter:
                     retry_count = retry_count + 1
                     launch_browser(retry_count)
                 else:
-                    raise Exception('Unable to start python server even after '
-                                    'retrying 60 times.')
+                    raise RuntimeError('Unable to start python server even '
+                                       'after retrying 60 times.')
 
         if self.driver is not None:
             launch_browser(0)
diff --git a/web/regression/feature_utils/pgadmin_page.py b/web/regression/feature_utils/pgadmin_page.py
index 334956409..15d775a12 100644
--- a/web/regression/feature_utils/pgadmin_page.py
+++ b/web/regression/feature_utils/pgadmin_page.py
@@ -323,7 +323,7 @@ class PgadminPage:
                 attempts -= 1
                 time.sleep(.4)
                 if attempts == 0:
-                    raise Exception(e)
+                    raise e
 
     def click_a_tree_node(self, element_name, list_of_element):
         """It will click a tree node eg. server, schema, table name etc
@@ -892,7 +892,7 @@ class PgadminPage:
         except Exception as e:
             time.sleep(.2)
             if attempt == 2:
-                raise Exception(e)
+                raise e
         # Use send keys if input_keys true, else use javascript to set content
         if input_keys:
             backspaces = [Keys.BACKSPACE] * len(field.get_attribute('value'))
diff --git a/web/regression/runtests.py b/web/regression/runtests.py
index 86c5a0a8e..c49b30860 100644
--- a/web/regression/runtests.py
+++ b/web/regression/runtests.py
@@ -25,7 +25,7 @@ import time
 import unittest
 
 if sys.version_info < (3, 4):
-    raise Exception('The test suite must be run under Python 3.4 or later.')
+    raise RuntimeError('The test suite must be run under Python 3.4 or later.')
 
 import builtins