All minimum system requirements are based on a single-user environment (one Windows client user accessing a local database, or one web client user accessing a hosted database), and do not represent requirements for optimum performance of your Act! implementation. Recommended server system requirements are for environments of more than one user. Customer registration and activation are required and you must purchase one license of Act! per user. Your system must meet the minimum requirements to be eligible for technical support. 

Act! Premium (access via Windows®)

System Requirements

  • 4 GB available hard disk space
  • 1280 x 768 or higher resolution monitor
  • Broadband Internet connection
  • 4 GB system memory
  • 1.8 GHz processor

Supported Office Integrations

  • Microsoft® Office 2021 for Windows (32-bit and 64-bit)
  • Microsoft® Office 2019 (32-bit and 64-bit)
  • Microsoft® Office 2016 (32-bit and 64-bit)
  • Microsoft® Office 2013 (32-bit and 64-bit)
  • Microsoft® Exchange and Office 365 for contact and calendar synchronisation
  • .NET 4.7 (required for integration features only)

Further information around Exchange support is available here.

Supported Operating Systems

  • Windows Server 2019
  • Windows Server 2016
  • Windows Server 2012 R2 (Only Upgrades Supported)
  • Windows 10 (64-bit)
  • Windows 11 (64-bit)

​Database Server

Act! uses SQL Server® 2019 Express or your existing installation of SQL Server 2014 R2 or newer.

Act! CRM (access via cloud, web or mobile)

Server System Requirements

  • 4 GB available hard disk space
  • 1280 x 768 or higher resolution monitor
  • Broadband Internet connection
  • 4 GB system memory
  • 1.8 GHz processor
  • Network Interface Card
  • Router and/or Firewall that supports IPv4 NAT or IPv6

Supported Operating Systems

  • Windows Server 2019
  • Windows Server 2016
  • Windows Server 2012 R2 (Only Upgrades Supported)
  • Windows 10 (64-bit)
  • Windows 11 (64-bit)

Database Server

Act! uses SQL Server® 2019 Express or your existing installation of SQL Server 2014 R2 or newer.

Supported Browsers

  • Google Chrome™ Browser for Windows
  • Google Chrome™ Browser for Mac
  • Microsoft Edge™ v79 and above

Supported Office Integrations

  • Microsoft® Office 2021 for Windows (32-bit and 64-bit)
  • Microsoft® Office 2019 (32-bit and 64-bit)
  • Microsoft® Office 2016 (32-bit and 64-bit)
  • Microsoft® Office 2013 (32-bit and 64-bit)
  • Microsoft® Exchange and Office 365 for contact and calendar synchronisation (Further information around Exchange support is availablehere)
  • .NET 4.7 (required for integration features only)

Further information around Exchange support is available here.

Mobile Client System Requirements

  • Safari® for iPad®
  • Safari® for iPhone®
  • Google Chrome™ Browser for Android
  • Internet access to Act! Premium for Web IIS server

SQL Server Edition Recommendations

Express is free, but limits processor use to the lesser of a single CPU socket or 4 cores. Memory is also limited to 1 GB, and the size of your data file cannot exceed 10 GB. For this reason, we recommend SQL Standard for any deployment over 20 users or 5 GB in size, allowing for growth. Individual performance may vary based on actual database size, hardware variations, and product usage.


1. Higher specification PCs and networks will improve performance, and may be recommended for certain Operating System choices. Consult Microsoft documentation for more details.

2. Additional disk space may be required as local database size increases.

3. SSL Secured Mail Services are not supported.

4. Anti-Virus products are recommended but should be disabled during install and re-enabled afterwards. As with any Anti-Virus product, some configuration may be required for Act! to perform properly.

5. Server Core installations of Windows Server 2008 R2 are not supported.

6. Only for supported for upgrades, not new/clean installations of Act!.