diff --git a/apps/user_ldap/appinfo/install.php b/apps/user_ldap/appinfo/install.php
index f0701c66455f2288d37792f473c99a9769e9b876..3166055395e3d360fa75fa934cc1ebce1e5e30ba 100644
--- a/apps/user_ldap/appinfo/install.php
+++ b/apps/user_ldap/appinfo/install.php
@@ -25,7 +25,7 @@
 $config = \OC::$server->getConfig();
 $state = $config->getSystemValue('ldapIgnoreNamingRules', 'doSet');
 if($state === 'doSet') {
-	OCP\Config::setSystemValue('ldapIgnoreNamingRules', false);
+	\OC::$server->getConfig()->setSystemValue('ldapIgnoreNamingRules', false);
 }
 
 $helper = new \OCA\User_LDAP\Helper($config);
diff --git a/apps/user_ldap/lib/Configuration.php b/apps/user_ldap/lib/Configuration.php
index 8522962172b98bf2746258adf6da62fea064092f..7179d9aa39db38b2465bd98d28f90666e2a731ab 100644
--- a/apps/user_ldap/lib/Configuration.php
+++ b/apps/user_ldap/lib/Configuration.php
@@ -372,7 +372,7 @@ class Configuration {
 		if(is_null($defaults)) {
 			$defaults = $this->getDefaults();
 		}
-		return \OCP\Config::getAppValue('user_ldap',
+		return \OC::$server->getConfig()->getAppValue('user_ldap',
 										$this->configPrefix.$varName,
 										$defaults[$varName]);
 	}
diff --git a/apps/user_ldap/lib/Jobs/UpdateGroups.php b/apps/user_ldap/lib/Jobs/UpdateGroups.php
index a118d54d36f98d5b0a7bdfe16af2be0c74bb4e94..c5eff77dbe324271129faa2d14021b03e9e14ff6 100644
--- a/apps/user_ldap/lib/Jobs/UpdateGroups.php
+++ b/apps/user_ldap/lib/Jobs/UpdateGroups.php
@@ -85,7 +85,7 @@ class UpdateGroups extends \OC\BackgroundJob\TimedJob {
 	 */
 	static private function getRefreshInterval() {
 		//defaults to every hour
-		return \OCP\Config::getAppValue('user_ldap', 'bgjRefreshInterval', 3600);
+		return \OC::$server->getConfig()->getAppValue('user_ldap', 'bgjRefreshInterval', 3600);
 	}
 
 	/**
diff --git a/lib/composer/composer/autoload_classmap.php b/lib/composer/composer/autoload_classmap.php
index f392e55037f713d7675c12a9da0a3dbb857f675f..a6160c0303f3259759f665b3e69e9866524b3ab8 100644
--- a/lib/composer/composer/autoload_classmap.php
+++ b/lib/composer/composer/autoload_classmap.php
@@ -87,7 +87,6 @@ return array(
     'OCP\\Comments\\IllegalIDChangeException' => $baseDir . '/lib/public/Comments/IllegalIDChangeException.php',
     'OCP\\Comments\\MessageTooLongException' => $baseDir . '/lib/public/Comments/MessageTooLongException.php',
     'OCP\\Comments\\NotFoundException' => $baseDir . '/lib/public/Comments/NotFoundException.php',
-    'OCP\\Config' => $baseDir . '/lib/public/Config.php',
     'OCP\\Console\\ConsoleEvent' => $baseDir . '/lib/public/Console/ConsoleEvent.php',
     'OCP\\Constants' => $baseDir . '/lib/public/Constants.php',
     'OCP\\Contacts' => $baseDir . '/lib/public/Contacts.php',
diff --git a/lib/composer/composer/autoload_static.php b/lib/composer/composer/autoload_static.php
index 6828f70674acc9e38c90e0810742f38e4a16bbd5..79e73326f78fcc418b695d2a357c5d392fd39c2b 100644
--- a/lib/composer/composer/autoload_static.php
+++ b/lib/composer/composer/autoload_static.php
@@ -117,7 +117,6 @@ class ComposerStaticInit53792487c5a8370acc0b06b1a864ff4c
         'OCP\\Comments\\IllegalIDChangeException' => __DIR__ . '/../../..' . '/lib/public/Comments/IllegalIDChangeException.php',
         'OCP\\Comments\\MessageTooLongException' => __DIR__ . '/../../..' . '/lib/public/Comments/MessageTooLongException.php',
         'OCP\\Comments\\NotFoundException' => __DIR__ . '/../../..' . '/lib/public/Comments/NotFoundException.php',
-        'OCP\\Config' => __DIR__ . '/../../..' . '/lib/public/Config.php',
         'OCP\\Console\\ConsoleEvent' => __DIR__ . '/../../..' . '/lib/public/Console/ConsoleEvent.php',
         'OCP\\Constants' => __DIR__ . '/../../..' . '/lib/public/Constants.php',
         'OCP\\Contacts' => __DIR__ . '/../../..' . '/lib/public/Contacts.php',
diff --git a/lib/private/App/CodeChecker/DeprecationCheck.php b/lib/private/App/CodeChecker/DeprecationCheck.php
index 037a2cee849aa4904a737f1e79fe2e5f466e2d8f..c8b8d639f464e8b0b352bbfaf1ab8f84e9dfa411 100644
--- a/lib/private/App/CodeChecker/DeprecationCheck.php
+++ b/lib/private/App/CodeChecker/DeprecationCheck.php
@@ -38,7 +38,6 @@ class DeprecationCheck extends AbstractCheck implements ICheck {
 		return [
 			'OC_JSON' => '8.2.0',
 
-			'OCP\Config' => '8.0.0',
 			'OCP\Contacts' => '8.1.0',
 			'OCP\DB' => '8.1.0',
 			'OCP\IHelper' => '8.1.0',
diff --git a/lib/private/Files/Cache/Scanner.php b/lib/private/Files/Cache/Scanner.php
index a6adccbb4e23a5afed8207aa40c9c5a7b73cc7c2..85a89962f761611f11628276a4f25aaef1a46ccb 100644
--- a/lib/private/Files/Cache/Scanner.php
+++ b/lib/private/Files/Cache/Scanner.php
@@ -36,7 +36,6 @@ namespace OC\Files\Cache;
 
 use OC\Files\Filesystem;
 use OC\Hooks\BasicEmitter;
-use OCP\Config;
 use OCP\Files\Cache\IScanner;
 use OCP\Files\ForbiddenException;
 use OCP\Lock\ILockingProvider;
diff --git a/lib/private/Share/Share.php b/lib/private/Share/Share.php
index 4a4f9289f2f93f363dcd9440df2d0357901269fa..193e0c1a27e477e5cf4b2325bc181502690fa12c 100644
--- a/lib/private/Share/Share.php
+++ b/lib/private/Share/Share.php
@@ -763,7 +763,7 @@ class Share extends Constants {
 			// initialize max date with share time
 			$maxDate = new \DateTime();
 			$maxDate->setTimestamp($shareTime);
-			$maxDays = \OCP\Config::getAppValue('core', 'shareapi_expire_after_n_days', '7');
+			$maxDays = \OC::$server->getConfig()->getAppValue('core', 'shareapi_expire_after_n_days', '7');
 			$maxDate->add(new \DateInterval('P' . $maxDays . 'D'));
 			if ($date > $maxDate) {
 				$warning = 'Cannot set expiration date. Shares cannot expire later than ' . $maxDays . ' after they have been shared';
@@ -2152,7 +2152,7 @@ class Share extends Constants {
 	 * @return bool
 	 */
 	public static function isDefaultExpireDateEnabled() {
-		$defaultExpireDateEnabled = \OCP\Config::getAppValue('core', 'shareapi_default_expire_date', 'no');
+		$defaultExpireDateEnabled = \OC::$server->getConfig()->getAppValue('core', 'shareapi_default_expire_date', 'no');
 		return ($defaultExpireDateEnabled === "yes") ? true : false;
 	}
 
@@ -2160,7 +2160,7 @@ class Share extends Constants {
 	 * @return bool
 	 */
 	public static function enforceDefaultExpireDate() {
-		$enforceDefaultExpireDate = \OCP\Config::getAppValue('core', 'shareapi_enforce_expire_date', 'no');
+		$enforceDefaultExpireDate = \OC::$server->getConfig()->getAppValue('core', 'shareapi_enforce_expire_date', 'no');
 		return ($enforceDefaultExpireDate === "yes") ? true : false;
 	}
 
@@ -2168,7 +2168,7 @@ class Share extends Constants {
 	 * @return int
 	 */
 	public static function getExpireInterval() {
-		return (int)\OCP\Config::getAppValue('core', 'shareapi_expire_after_n_days', '7');
+		return (int)\OC::$server->getConfig()->getAppValue('core', 'shareapi_expire_after_n_days', '7');
 	}
 
 	/**
diff --git a/lib/private/legacy/util.php b/lib/private/legacy/util.php
index 5cc83c0c304ebb64e6841ee54587176909f5ccf5..aaedd88a7ff6999a337958ffcc7ec26cf5fc0700 100644
--- a/lib/private/legacy/util.php
+++ b/lib/private/legacy/util.php
@@ -341,10 +341,10 @@ class OC_Util {
 	 * @suppress PhanDeprecatedFunction
 	 */
 	public static function isDefaultExpireDateEnforced() {
-		$isDefaultExpireDateEnabled = \OCP\Config::getAppValue('core', 'shareapi_default_expire_date', 'no');
+		$isDefaultExpireDateEnabled = \OC::$server->getConfig()->getAppValue('core', 'shareapi_default_expire_date', 'no');
 		$enforceDefaultExpireDate = false;
 		if ($isDefaultExpireDateEnabled === 'yes') {
-			$value = \OCP\Config::getAppValue('core', 'shareapi_enforce_expire_date', 'no');
+			$value = \OC::$server->getConfig()->getAppValue('core', 'shareapi_enforce_expire_date', 'no');
 			$enforceDefaultExpireDate = ($value === 'yes') ? true : false;
 		}
 
diff --git a/lib/public/Config.php b/lib/public/Config.php
deleted file mode 100644
index 136b7578f40bf865d8b61d2ab1d1c5d49418719f..0000000000000000000000000000000000000000
--- a/lib/public/Config.php
+++ /dev/null
@@ -1,164 +0,0 @@
-<?php
-/**
- * @copyright Copyright (c) 2016, ownCloud, Inc.
- *
- * @author Bart Visscher <bartv@thisnet.nl>
- * @author Frank Karlitschek <frank@karlitschek.de>
- * @author Georg Ehrke <oc.list@georgehrke.com>
- * @author Jörn Friedrich Dreyer <jfd@butonic.de>
- * @author Lukas Reschke <lukas@statuscode.ch>
- * @author Morris Jobke <hey@morrisjobke.de>
- * @author Robin Appelman <robin@icewind.nl>
- * @author Thomas Müller <thomas.mueller@tmit.eu>
- *
- * @license AGPL-3.0
- *
- * This code is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License, version 3,
- * as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License, version 3,
- * along with this program.  If not, see <http://www.gnu.org/licenses/>
- *
- */
-
-/**
- * Public interface of ownCloud for apps to use.
- * Config Class
- *
- */
-
-/**
- * Use OCP namespace for all classes that are considered public.
- *
- * Classes that use this namespace are for use by apps, and not for use by internal
- * OC classes
- */
-namespace OCP;
-
-/**
- * This class provides functions to read and write configuration data.
- * configuration can be on a system, application or user level
- * @deprecated 8.0.0 use methods of \OCP\IConfig
- */
-class Config {
-	/**
-	 * Gets a value from config.php
-	 * @param string $key key
-	 * @param mixed $default = null default value
-	 * @return mixed the value or $default
-	 * @deprecated 8.0.0 use method getSystemValue of \OCP\IConfig
-	 *
-	 * This function gets the value from config.php. If it does not exist,
-	 * $default will be returned.
-	 */
-	public static function getSystemValue( $key, $default = null ) {
-		return \OC::$server->getConfig()->getSystemValue( $key, $default );
-	}
-
-	/**
-	 * Sets a value
-	 * @param string $key key
-	 * @param mixed $value value
-	 * @return bool
-	 * @deprecated 8.0.0 use method setSystemValue of \OCP\IConfig
-	 *
-	 * This function sets the value and writes the config.php. If the file can
-	 * not be written, false will be returned.
-	 */
-	public static function setSystemValue( $key, $value ) {
-		try {
-			\OC::$server->getConfig()->setSystemValue( $key, $value );
-		} catch (\Exception $e) {
-			return false;
-		}
-		return true;
-	}
-
-	/**
-	 * Deletes a value from config.php
-	 * @param string $key key
-	 * @deprecated 8.0.0 use method deleteSystemValue of \OCP\IConfig
-	 *
-	 * This function deletes the value from config.php.
-	 */
-	public static function deleteSystemValue( $key ) {
-		\OC::$server->getConfig()->deleteSystemValue( $key );
-	}
-
-	/**
-	 * Gets the config value
-	 * @param string $app app
-	 * @param string $key key
-	 * @param string $default = null, default value if the key does not exist
-	 * @return string the value or $default
-	 * @deprecated 8.0.0 use method getAppValue of \OCP\IConfig
-	 *
-	 * This function gets a value from the appconfig table. If the key does
-	 * not exist the default value will be returned
-	 */
-	public static function getAppValue( $app, $key, $default = null ) {
-		return \OC::$server->getConfig()->getAppValue( $app, $key, $default );
-	}
-
-	/**
-	 * Sets a value in the appconfig
-	 * @param string $app app
-	 * @param string $key key
-	 * @param string $value value
-	 * @return boolean true/false
-	 * @deprecated 8.0.0 use method setAppValue of \OCP\IConfig
-	 *
-	 * Sets a value. If the key did not exist before it will be created.
-	 */
-	public static function setAppValue( $app, $key, $value ) {
-		try {
-			\OC::$server->getConfig()->setAppValue( $app, $key, $value );
-		} catch (\Exception $e) {
-			return false;
-		}
-		return true;
-	}
-
-	/**
-	 * Gets the preference
-	 * @param string $user user
-	 * @param string $app app
-	 * @param string $key key
-	 * @param string $default = null, default value if the key does not exist
-	 * @return string the value or $default
-	 * @deprecated 8.0.0 use method getUserValue of \OCP\IConfig
-	 *
-	 * This function gets a value from the preferences table. If the key does
-	 * not exist the default value will be returned
-	 */
-	public static function getUserValue( $user, $app, $key, $default = null ) {
-		return \OC::$server->getConfig()->getUserValue( $user, $app, $key, $default );
-	}
-
-	/**
-	 * Sets a value in the preferences
-	 * @param string $user user
-	 * @param string $app app
-	 * @param string $key key
-	 * @param string $value value
-	 * @return bool
-	 * @deprecated 8.0.0 use method setUserValue of \OCP\IConfig
-	 *
-	 * Adds a value to the preferences. If the key did not exist before, it
-	 * will be added automagically.
-	 */
-	public static function setUserValue( $user, $app, $key, $value ) {
-		try {
-			\OC::$server->getConfig()->setUserValue( $user, $app, $key, $value );
-		} catch (\Exception $e) {
-			return false;
-		}
-		return true;
-	}
-}
diff --git a/tests/lib/PublicNamespace/OCPConfigTest.php b/tests/lib/PublicNamespace/OCPConfigTest.php
deleted file mode 100644
index 44fd234735ea4ed526608c8baaee521e0317a0c1..0000000000000000000000000000000000000000
--- a/tests/lib/PublicNamespace/OCPConfigTest.php
+++ /dev/null
@@ -1,38 +0,0 @@
-<?php
-/**
- * ownCloud
- *
- * @author Thomas Müller
- * @copyright 2014 Thomas Müller thomas.mueller@tmit.eu
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
- * License as published by the Free Software Foundation; either
- * version 3 of the License, or any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU AFFERO GENERAL PUBLIC LICENSE for more details.
- *
- * You should have received a copy of the GNU Affero General Public
- * License along with this library.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-namespace Test\PublicNamespace;
-
-class OCPConfigTest extends \Test\TestCase {
-
-	public function testSetAppValueIfSetToNull() {
-
-		$key = $this->getUniqueID('key-');
-
-		$result = \OCP\Config::setAppValue('unit-test', $key, null);
-		$this->assertTrue($result);
-
-		$result = \OCP\Config::setAppValue('unit-test', $key, '12');
-		$this->assertTrue($result);
-
-	}
-
-}
diff --git a/tests/lib/UtilTest.php b/tests/lib/UtilTest.php
index 16d03b049fe8062e8df99641583a300001b34afd..037736bf00f74d22c454cdaa4994af8a95218750 100644
--- a/tests/lib/UtilTest.php
+++ b/tests/lib/UtilTest.php
@@ -304,12 +304,12 @@ class UtilTest extends \Test\TestCase {
 
 		// need to set a user id to make sure enabled apps are read from cache
 		\OC_User::setUserId($this->getUniqueID());
-		\OCP\Config::setSystemValue('defaultapp', $defaultAppConfig);
+		\OC::$server->getConfig()->setSystemValue('defaultapp', $defaultAppConfig);
 		$this->assertEquals('http://localhost/' . $expectedPath, Dummy_OC_Util::getDefaultPageUrl());
 
 		// restore old state
 		\OC::$WEBROOT = $oldWebRoot;
-		\OCP\Config::setSystemValue('defaultapp', $oldDefaultApps);
+		\OC::$server->getConfig()->setSystemValue('defaultapp', $oldDefaultApps);
 		\OC_User::setUserId(null);
 	}