diff --git a/checks_develop.py b/checks_develop.py
index 65d9b41c..604850f7 100644
--- a/checks_develop.py
+++ b/checks_develop.py
@@ -66,7 +66,7 @@ def check_java():
 def check_rabbitmq():
   dependence = CDependencies()
   base.print_info('Check installed RabbitMQ')
-  result = run_command('sc query RabbitMQ')['stdout']
+  result = base.run_command('sc query RabbitMQ')['stdout']
   
   if (result.find('RabbitMQ') != -1):
     print('Installed RabbitMQ is valid')
@@ -85,7 +85,7 @@ def check_erlang():
   erlangHome = os.getenv("ERLANG_HOME")
   
   if (erlangHome != ""):
-    erlangBitness = run_command('cd ' + erlangHome + '/bin && erl -eval "erlang:display(erlang:system_info(wordsize)), halt()." -noshell')['stdout']
+    erlangBitness = base.run_command('"' + erlangHome + '\\bin\\erl" -eval "erlang:display(erlang:system_info(wordsize)), halt()." -noshell')['stdout']
     if (erlangBitness == '8'):
       print("Installed Erlang is valid")
       return dependence
@@ -115,7 +115,7 @@ def get_mysqlServersInfo(sParam):
   arrInfo = []
   
   try:
-    keyValue = r"SOFTWARE\WOW6432Node\MySQL AB"
+    keyValue = "SOFTWARE\\WOW6432Node\\MySQL AB"
     aKey = winreg.OpenKey(winreg.HKEY_LOCAL_MACHINE, keyValue)
     
     count_subkey = winreg.QueryInfoKey(aKey)[0]
@@ -132,7 +132,7 @@ def check_mysqlInstaller():
   dependence = CDependencies()
   
   try:
-    keyValue = r"SOFTWARE\WOW6432Node\MySQL"    
+    keyValue = "SOFTWARE\\WOW6432Node\\MySQL"    
     aKey = winreg.OpenKey(winreg.HKEY_LOCAL_MACHINE, keyValue)
     
     count_subkey = winreg.QueryInfoKey(aKey)[0]
@@ -155,7 +155,7 @@ def check_mysqlServersBitness(MySQLPaths):
     if (mysqlServerPath == ""):
       serversBitness.append("")
     else:
-      result = base.run_command('cd ' + mysqlServerPath + 'bin && mysql --version')['stdout']
+      result = base.run_command('"' + mysqlServerPath + 'bin\\mysql" --version')['stdout']
       if (result.find('for Win32') != -1):
         serversBitness.append('x32')
       elif (result.find('for Win64') != -1):
@@ -186,12 +186,12 @@ def check_mysqlServer(serversBitness, serversVersions, serversPaths, dataPaths):
       continue
     elif (result == 'x64'):
       print('MySQL Server bitness is valid')
-      connectionResult = base.run_command('cd ' + serversPaths[i] + 'bin && mysql -u root -ponlyoffice -e "SHOW GLOBAL VARIABLES LIKE ' + r"'PORT';" + '"')['stdout']
+      connectionResult = base.run_command('"' + serversPaths[i] + 'bin\\mysql" -u root -ponlyoffice -e "SHOW GLOBAL VARIABLES LIKE ' + r"'PORT';" + '"')['stdout']
       if (connectionResult.find('port') != -1 and connectionResult.find('3306') != -1):
-        if (base.run_command('cd ' + serversPaths[i] + 'bin && mysql -u root -ponlyoffice -e "SHOW DATABASES;"')['stdout'].find('onlyoffice') == -1):
+        if (base.run_command('"' + serversPaths[i] + 'bin\\mysql" -u root -ponlyoffice -e "SHOW DATABASES;"')['stdout'].find('onlyoffice') == -1):
           print('Database onlyoffice not found')
           dependence.progsToInstall.append('MySQLDatabase')
-        if (base.run_command('cd ' + serversPaths[i] + 'bin && mysql -u root -ponlyoffice -e "SELECT plugin from mysql.user where User=' + "'root';")['stdout'].find('mysql_native_password') == -1):
+        if (base.run_command('"' + serversPaths[i] + 'bin\\mysql" -u root -ponlyoffice -e "SELECT plugin from mysql.user where User=' + "'root';")['stdout'].find('mysql_native_password') == -1):
           print('Password encryption is not valid')
           dependence.progsToInstall.append('MySQLEncrypt') 
         dependence.pathToValidMySQLServer = serversPaths[i]
@@ -208,7 +208,7 @@ def check_buildTools():
   dependence = CDependencies()
   
   base.print_info('Check installed Build Tools')
-  result = base.run_command(os.path.split(os.getcwd())[0] + r'\build_tools\tools\win\vswhere\vswhere -latest -products * -requires Microsoft.VisualStudio.Component.VC.Tools.x86.x64 -property DisplayName')['stdout']
+  result = base.run_command(os.path.split(os.getcwd())[0] + '\\build_tools\\tools\\win\\vswhere\\vswhere -latest -products * -requires Microsoft.VisualStudio.Component.VC.Tools.x86.x64 -property DisplayName')['stdout']
   if (result == ''):
     print('Build Tools not found')
     dependence.progsToInstall.append('BuildTools')
@@ -220,7 +220,7 @@ def check_buildTools():
 def get_programDelInfoByFlag(sName, flag):
   info = []
   aReg = winreg.ConnectRegistry(None, winreg.HKEY_LOCAL_MACHINE)
-  aKey= winreg.OpenKey(aReg, r"SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Uninstall", 0, winreg.KEY_READ | flag)
+  aKey= winreg.OpenKey(aReg, "SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Uninstall", 0, winreg.KEY_READ | flag)
   count_subkey = winreg.QueryInfoKey(aKey)[0]
 
   for i in range(count_subkey):
diff --git a/install_develop.py b/install_develop.py
index 85201581..31ee97e0 100644
--- a/install_develop.py
+++ b/install_develop.py
@@ -94,7 +94,7 @@ def installingProgram(sProgram, sParam = ''):
       return False
   elif (sProgram == 'MySQLServer'):
     print('Installing MySQL Server...')
-    code = subprocess.call('cd ' + os.path.abspath(os.sep) + 'Program Files (x86)\MySQL\MySQL Installer for Windows && MySQLInstallerConsole.exe community install server;8.0.21;x64:*:type=config;openfirewall=true;generallog=true;binlog=true;serverid=3306;enable_tcpip=true;port=3306;rootpasswd=onlyoffice -silent',  stdout=subprocess.PIPE, stderr=subprocess.PIPE, shell=True)
+    code = subprocess.call('"' + os.path.abspath(os.sep) + 'Program Files (x86)\\MySQL\\MySQL Installer for Windows\\MySQLInstallerConsole" community install server;8.0.21;x64:*:type=config;openfirewall=true;generallog=true;binlog=true;serverid=3306;enable_tcpip=true;port=3306;rootpasswd=onlyoffice -silent',  stdout=subprocess.PIPE, stderr=subprocess.PIPE, shell=True)
     print(code)
     if (code == 0):
       print("Install success!")
@@ -104,11 +104,11 @@ def installingProgram(sProgram, sParam = ''):
       return False
   elif (sProgram == 'MySQLDatabase'):
     print('Setting database...')
-    subprocess.call('cd ' + sParam + 'bin && mysql -u root -ponlyoffice -e "source ' + os.getcwd() + '\schema\mysql\createdb.sql"', stdout=subprocess.PIPE, stderr=subprocess.PIPE, shell=True)
+    subprocess.call('"' + sParam + 'bin\\mysql" -u root -ponlyoffice -e "source ' + os.getcwd() + '\\schema\\mysql\\createdb.sql"', stdout=subprocess.PIPE, stderr=subprocess.PIPE, shell=True)
     return True
   elif (sProgram == 'MySQLEncrypt'):
     print('Setting MySQL password encrypting...')
-    subprocess.call('cd ' + sParam + 'bin && mysql -u root -ponlyoffice -e "' + "ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY 'onlyoffice';" + '"', stdout=subprocess.PIPE, stderr=subprocess.PIPE, shell=True)
+    subprocess.call('"' + sParam + 'bin\\mysql" -u root -ponlyoffice -e "' + "ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY 'onlyoffice';" + '"', stdout=subprocess.PIPE, stderr=subprocess.PIPE, shell=True)
     return True   
   elif (sProgram == "BuildTools"):
     print('Installing Build Tools...')
@@ -149,8 +149,8 @@ def installMySQLServer():
   for i in range(len(mysqlVersions)):
     if (mysqlVersions[i] == '8.0.21'):
       print('Setting MySQL database...')
-      subprocess.call('cd ' + mysqlPaths[i] + 'bin && mysql -u root -ponlyoffice -e "source ' + os.getcwd() + '\schema\mysql\createdb.sql"', stdout=subprocess.PIPE, stderr=subprocess.PIPE, shell=True)
-      subprocess.call('cd ' + mysqlPaths[i] + 'bin && mysql -u root -ponlyoffice -e "' + "ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY 'onlyoffice';" + '"', stdout=subprocess.PIPE, stderr=subprocess.PIPE, shell=True)
+      subprocess.call('"' + mysqlPaths[i] + 'bin\\mysql" -u root -ponlyoffice -e "source ' + os.getcwd() + '\\schema\\mysql\\createdb.sql"', stdout=subprocess.PIPE, stderr=subprocess.PIPE, shell=True)
+      subprocess.call('"' + mysqlPaths[i] + 'bin\\mysql" -u root -ponlyoffice -e "' + "ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY 'onlyoffice';" + '"', stdout=subprocess.PIPE, stderr=subprocess.PIPE, shell=True)
       print('MySQL Server ' + mysqlVersions[i][0:3] + ' is valid')
       return True
   return False