diff --git a/db/zm_create.sql.in b/db/zm_create.sql.in
index 787854091..e0af53f1f 100644
--- a/db/zm_create.sql.in
+++ b/db/zm_create.sql.in
@@ -245,7 +245,7 @@ DROP TABLE IF EXISTS `Events_Week`;
 CREATE TABLE `Events_Week` (
   `EventId` BIGINT unsigned NOT NULL,
   `MonitorId` int(10) unsigned NOT NULL,
-  `StartTime` datetime default NULL,
+  `StartTime` datetime default NULL,M
   `DiskSpace`   bigint default NULL,
   PRIMARY KEY (`EventId`),
   KEY `Events_Week_MonitorId_idx` (`MonitorId`),
@@ -640,6 +640,8 @@ CREATE TABLE `Users` (
   `System` enum('None','View','Edit') NOT NULL default 'None',
   `MaxBandwidth` varchar(16),
   `MonitorIds` text,
+  `TokenMinExpiry`   BIGINT UNSIGNED NOT NULL DEFAULT 0,
+  `APIEnabled`  tinyint(3) UNSIGNED NOT NULL default 1,
   PRIMARY KEY (`Id`),
   UNIQUE KEY `UC_Username` (`Username`)
 ) ENGINE=@ZM_MYSQL_ENGINE@;
diff --git a/src/zm_crypt.cpp b/src/zm_crypt.cpp
index 6d9af1460..845582137 100644
--- a/src/zm_crypt.cpp
+++ b/src/zm_crypt.cpp
@@ -7,8 +7,9 @@
 
 
 // returns username if valid, "" if not
-std::string verifyToken(std::string jwt_token_str, std::string key) {
+std::pair <std::string, unsigned int> verifyToken(std::string jwt_token_str, std::string key) {
   std::string username = "";
+  int token_issued_at = 0;
   try {
     // is it decodable?
     auto decoded = jwt::decode(jwt_token_str);
@@ -24,13 +25,13 @@ std::string verifyToken(std::string jwt_token_str, std::string key) {
       std::string type = decoded.get_payload_claim("type").as_string();
       if (type != "access") {
         Error ("Only access tokens are allowed. Please do not use refresh tokens");
-        return "";
+        return std::make_pair("",0);
       }
     }
     else {
       // something is wrong. All ZM tokens have type
       Error ("Missing token type. This should not happen");
-      return "";
+      return std::make_pair("",0);
     }
     if (decoded.has_payload_claim("user")) {
       username  = decoded.get_payload_claim("user").as_string();
@@ -38,19 +39,27 @@ std::string verifyToken(std::string jwt_token_str, std::string key) {
     } 
     else {
       Error ("User not found in claim");
-      return "";
+      return std::make_pair("",0);
+    }
+
+     if (decoded.has_payload_claim("iat")) {
+      token_issued_at  = (unsigned int) (decoded.get_payload_claim("iat").as_int());
+    } 
+    else {
+      Error ("IAT not found in claim. This should not happen");
+      return std::make_pair("",0);
     }
   } // try
   catch (const std::exception &e) {
       Error("Unable to verify token: %s", e.what());
-      return "";
+      return std::make_pair("",0);
   }
   catch (...) {
      Error ("unknown exception");
-     return "";
+     return std::make_pair("",0);
 
   }
-  return username;
+  return std::make_pair(username,token_issued_at);
 }
 
 bool verifyPassword(const char *username, const char *input_password, const char *db_password_hash) {
diff --git a/src/zm_crypt.h b/src/zm_crypt.h
index fd3bd7e85..340abc36c 100644
--- a/src/zm_crypt.h
+++ b/src/zm_crypt.h
@@ -27,5 +27,5 @@
 
 bool verifyPassword( const char *username, const char *input_password, const char *db_password_hash);
 
-std::string verifyToken(std::string token, std::string key);
+std::pair <std::string, unsigned int>  verifyToken(std::string token, std::string key);
 #endif // ZM_CRYPT_H
\ No newline at end of file
diff --git a/src/zm_user.cpp b/src/zm_user.cpp
index 7ac934d2a..b8009c221 100644
--- a/src/zm_user.cpp
+++ b/src/zm_user.cpp
@@ -154,7 +154,10 @@ User *zmLoadTokenUser (std::string jwt_token_str, bool use_remote_addr ) {
 
   Info ("Inside zmLoadTokenUser, formed key=%s", key.c_str());
 
-  std::string username = verifyToken(jwt_token_str, key);
+  std::pair<std::string, unsigned int> ans = verifyToken(jwt_token_str, key);
+  std::string username = ans.first;
+  unsigned int iat = ans.second;
+
   if (username != "") {
     char sql[ZM_SQL_MED_BUFSIZ] = "";
     snprintf(sql, sizeof(sql),
@@ -175,12 +178,21 @@ User *zmLoadTokenUser (std::string jwt_token_str, bool use_remote_addr ) {
 
     if ( n_users != 1 ) {
       mysql_free_result(result);
-      Warning("Unable to authenticate user %s", username.c_str());
+      Error("Unable to authenticate user %s", username.c_str());
       return NULL;
     }
 
     MYSQL_ROW dbrow = mysql_fetch_row(result);
     User *user = new User(dbrow);
+    unsigned int stored_iat =  strtoul(dbrow[14], NULL,0 );
+
+    if (stored_iat > iat ) { // admin revoked tokens
+      mysql_free_result(result);
+      Error("Token was revoked for %s", username.c_str());
+      return NULL;
+    }
+
+    Info ("Got stored expiry time of %u",stored_iat);
     Info ("Authenticated user '%s' via token", username.c_str());
     mysql_free_result(result);
     return user;
diff --git a/version b/version
index 692c2e30d..c64ec5337 100644
--- a/version
+++ b/version
@@ -1 +1 @@
-1.33.8
+1.33.9
diff --git a/web/includes/auth.php b/web/includes/auth.php
index 6a076ec5d..559b478ce 100644
--- a/web/includes/auth.php
+++ b/web/includes/auth.php
@@ -109,6 +109,19 @@ function userLogin($username='', $password='', $passwordHashed=false, $apiLogin
   $password_type = NULL;
     
   if ($saved_user_details) {
+
+    // if the API layer asked us to login, make sure the user 
+    // has API enabled (admin may have banned API for this user)
+
+    if ($apiLogin) {
+      if ($saved_user_details['APIEnabled'] != 1) {
+        ZM\Error ("API disabled for: $username");
+        $_SESSION['loginFailed'] = true;
+        unset($user);
+        return false;
+      }
+    }
+
     $saved_password = $saved_user_details['Password'];
     if ($saved_password[0] == '*') {
       // We assume we don't need to support mysql < 4.1
@@ -217,6 +230,17 @@ function validateToken ($token, $allowed_token_type='access') {
   $saved_user_details = dbFetchOne ($sql, NULL, $sql_values);
 
   if ($saved_user_details) {
+
+    $issuedAt =  $jwt_payload['iat'];
+    $minIssuedAt = $saved_user_details['TokenMinExpiry'];
+
+    if ($issuedAt < $minIssuedAt) {
+      ZM\Error ("Token revoked for $username. Please generate a new token");
+      $_SESSION['loginFailed'] = true;
+      unset($user);
+      return array(false, "Token revoked. Please re-generate");
+    }
+
     $user = $saved_user_details;
     return array($user, "OK");
   } else {
diff --git a/web/lang/en_gb.php b/web/lang/en_gb.php
index 09f3c09a9..e81f7fe6f 100644
--- a/web/lang/en_gb.php
+++ b/web/lang/en_gb.php
@@ -421,6 +421,7 @@ $SLANG = array(
     'Images'                => 'Images',
     'Include'               => 'Include',
     'In'                    => 'In',
+    'InvalidateTokens'      => 'Invalidate all generated tokens',
     'Inverted'              => 'Inverted',
     'Iris'                  => 'Iris',
     'KeyString'             => 'Key String',
diff --git a/web/skins/classic/views/options.php b/web/skins/classic/views/options.php
index 561964a85..90d9a5b02 100644
--- a/web/skins/classic/views/options.php
+++ b/web/skins/classic/views/options.php
@@ -29,7 +29,7 @@ $tabs = array();
 $tabs['skins'] = translate('Display');
 $tabs['system'] = translate('System');
 $tabs['config'] = translate('Config');
-$tabs['config'] = translate('API');
+$tabs['API'] = translate('API');
 $tabs['servers'] = translate('Servers');
 $tabs['storage'] = translate('Storage');
 $tabs['web'] = translate('Web');
@@ -134,7 +134,8 @@ foreach ( array_map('basename', glob('skins/'.$current_skin.'/css/*',GLOB_ONLYDI
             </div>
          </form>
 	
-      <?php
+
+<?php
 } else if ( $tab == 'users' ) {
 ?>
       <form name="userForm" method="post" action="?">
@@ -424,6 +425,32 @@ foreach ( array_map('basename', glob('skins/'.$current_skin.'/css/*',GLOB_ONLYDI
 <?php
     }
 ?>
+
+<?php
+  if ($tab == 'API') {
+?>
+
+  HELLO BABY!
+  <form method="post">
+    <input type="submit" name="test" id="test" 
+    value=<?php echo translate("Image") ?> ><br/>
+</form>
+
+<?php
+  function testfun()
+  {
+    echo "Your test function on button click is working";
+  }
+
+  if(array_key_exists('test',$_POST)){
+    testfun();
+  }
+}
+?>
+
+
+
+
         <div id="contentButtons">
           <button type="submit" value="Save"<?php echo $canEdit?'':' disabled="disabled"' ?>><?php echo translate('Save') ?></button>
         </div>
@@ -432,6 +459,8 @@ foreach ( array_map('basename', glob('skins/'.$current_skin.'/css/*',GLOB_ONLYDI
 }
 ?>
 
+
+
     </div><!-- end #options -->
 	</div>
 </div> <!-- end row -->