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OST 3.98 - 01.01 System Requirements and Installation Instructions

Reference Number: AA-04173 Views: 850 Created: 05/06/2020 07:45 am Last Updated: 08/05/2020 04:30 pm 0 Rating/ Voters

If you haven't already installed On-Screen Takeoff, you start there. Before installing On-Screen Takeoff, be sure your computer meets our System Requirements. Keep in mind, the minimums necessary to run On-Screen Takeoff/Digital Production Control may not provide acceptable performance.

Read the Release Notes for this version (and previous versions, if you like).

Visit the On-Screen Takeoff® Product Information and Downloads page for last-minute information about the current release (and to find past versions).

Installer Downloads
For most current versions, you can download the appropriate installer from the Co-Branded Customer Portal - if you need assistance, contact Support.

The most-current System Requirements and Recommendations can be found here: CLS - Classic System Requirements

Operating System


Windows® 10 Pro or Windows Server 2016


Windows® 10 Home

32 Bit and 64 Bit operating systems are Supported.

(Windows® 7. Windows Server 2012, Windows 8, and Windows 8.1 are not supported.)

CPU (Processor)


Intel Core i5 or faster


Intel compatible 1GHz processor or faster

Memory and Storage


8 GB RAM or more



1 GB Hard drive space (plus more for plans, projects)

Other Requirements

Minimum display resolution: 1280 x 1024

Internet connection required for licensing

Must be installed by Windows administrator

.net 3.5 required

Usually, if your PC is capable of running a supported version of Windows above, it should be able to run On Center's products.


Information on running OCS Products in an Apple environment can be found in: ALL - Using Apple hardware (a MAC) with On Center's Products.

To use the 'Price Using Excel' function, a fully-licensed , locally-installed version of Microsoft Office® Professional 2010, 2013, or 2016 must be installed.

SQL Server 2008 R2, 2012, and 2014 (full or express versions), see CLS - Using SQL with Classic Products for more information.


On Center Software tests our software in conjunction with products currently under "Mainstream Support" with Microsoft. Once a version of Windows is 'retired' by Microsoft, On Center no longer tests or supports our software on that version. See CLS - Product End of Life (Sunset Plan) for more information.

The minimum system requirements support basic functionality of On Center Software programs. Actual requirements will vary, depending on your system configuration, other applications installed and running on your computer, the complexity of the electronic plans you use, and if you use the programs interactively.

If you are using a licensed version of On-Screen Takeoff, ensure you have your most current License Code(s) for the software (version specific). Then, download the appropriate version from the Product Information page, above. License codes are available in the Customer Portal.


Save the downloaded installer file to your local hard drive (the desktop is a perfect place, it is easy to find the installer).

When the download is complete, double-click the installer file - the "Installation Wizard" starts.

Click Next on the Welcome Screen (there is a link to the Release Notes and these installation instructions on the Welcome screen if you want to review them).

Review and Accept the End User License Agreement and click Next

Enter in the user and company name to which you want this installation of On-Screen Takeoff registered (this shows up on the "Splash Screen" and is associated with your product license although this does not change license ownership in any way) and click Next.


If you need to install to a directory other than the Windows default (<system drive>:\Program Files or <system drive>:\Program Files (x86)) click the Change button, otherwise click Next on the Destination Folder screen.

(We recommend installing to the default folder.)


Click Install to continue with the installation - a progress screen displays

When the installation is complete, an information screen displays - review the information and then click Finish

After you click "Finish", a web page opens explaining how to license your product (also covered in the next article).

A shortcut to On-Screen Takeoff is placed on your desktop, double-click it to launch the program.

  • Users who have purchased On-Screen Takeoff must activate a license to unlock the full functionality of the program (next article). 
  • If you are using the free PlanViewer, you do not license the product and can skip to Quick Start Wizards.

previous article arrow What Have You Gotten Yourself Into? An Introduction to On-Screen Takeoff Licensing On-Screen Takeoff (Unlocking Full Functionality) next article arrow

Discussion 4
  • #
    [ Ivan Zhikharev]: 02/05/2019 08:59 am

    Stop of windows 7 support so early is very stupid as many enterprises are still relying on Windows 7, as the 8 and 10 are not yet Large Company friendly.

  • #
    [Daniel Wal]: Re: 02/05/2019 09:33 am

    We understand your concerns, however, On Center cannot develop products against Microsoft operating systems that are no longer under "Mainstream Support". Older products will continue to work, of course, but new products include technology that is incompatible with older operating systems. Microsoft ended Mainstream Support for Windows 7 back in 2015, they are ending Extended Support for Windows 7 1/14/2020 - that means even Critical Security issues will no longer be fixed. It is simply impossible for On Center to develop new products and continue to try to Support and test against operating systems that are out-dated. Again, in the short-term, product versions that were supported on Windows 7 will continue to work, although the technology used to license those products has reached its end-of-life and may not be supported in the future. For more information on Microsoft's Windows 7 support life-cycle, please visit: https://support.microsoft.com/en-us/lifecycle/

  • #
    [ Zachiluka Phiri]: 08/26/2018 10:28 pm

    Do these requirements below mean that we cannot install OST 3.95 on Windows 7?

    Windows® 10 Pro or Windows Server 2016
    Windows® 8.1 Pro
    32 Bit and 64 Bit operating systems are Supported.
    (Windows® 7 and Windows Server 2012 are not supported.)

  • #
    [Daniel Wal]: Re: 08/28/2018 07:54 am

    Windows 7 is no longer supported, we don't test the products on that operating system nor do we troubleshoot issues that are unique to the software installed on that operating system. If you want to install the products on Window 7, you are doing so with the understanding that you are using the products in an unsupported environment, and Technical Support may not be able to help you with any issues that you experience.

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