# Requirements

Concord CRM requires few PHP extensions to function properly, most of the extensions are enabled by default on most servers, but it's strongly recommended to consult with your hosting provider or system administrator to check whether the extensions listed below are enabled and supported.


Windows (IIS) servers and installations on server with no domain is not supported (see domain notes below).

# Minimum Required PHP Version



Concord CRM requires MySQL version >= 5.6

# Required PHP Extensions

  • bcmath
  • ctype
  • JSON
  • mbstring
  • openssl
  • pdo
  • tokenizer
  • cURL
  • zip
  • imap
  • iconv
  • gd
  • fileinfo
  • dom

# Browser Support

Concord CRM supports the most recent versions of the following browsers:

  • Google Chrome
  • Apple Safari
  • Microsoft Edge
  • Mozilla Firefox

# Cron Job

cron is a Linux utility that schedules a command or script on your server to run automatically at a specified time and date. A cron job is the scheduled task itself. Cron jobs can be very useful to automate repetitive tasks.

Your web server must support configuring cron jobs, in order, Concord CRM features to work properly, after installation, please make sure to check the cron job guide to get familiar on how to configure the cron job required by the application.

See the setup guide for more info.

# Domain Name

Your server where you will be installing Concord CRM must have domain name, you can't use the server IP-address to access your Concord CRM installation, it must be accessed via the domain name.