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Office Installation Errors

Can Microsoft Project Professional 2016 and Project Online Desktop Coexist?

Ayan MasoodAyan Masood Oct 23, 2026 869 views

Question details

The user wants to know if Microsoft Project Professional 2016 and Project Online Desktop Premium can be installed simultaneously on the same computer.

Can Microsoft Project Professional 2016 and Project Online Desktop Coexist?
Product
Microsoft Project
Device & OS
Windows
Scenario
Attempting to install or use both Project Professional 2016 and Project Online Desktop Premium on a single machine.
Observed behavior
The desktop applications conflict, preventing both from being installed natively on the same Windows operating system.
Before you start

Ensure you have your product keys and account credentials ready for both versions of Microsoft Project. If you plan to use virtualization, check that your Windows computer has sufficient RAM and storage to run a secondary operating system smoothly.

Solution 1Recommended

Install One Version Using a Virtual Machine

Create an isolated environment to run the secondary Project application without conflicting with your host system.

By using virtualization software, you can run a secondary instance of Windows. This keeps the registry and installation files completely separate, bypassing the Microsoft Office coexistence limitations.

1
Choose and install virtualization software

Download and install a virtual machine application such as VMware Workstation, Parallels, Hyper-V, or VirtualBox on your primary Windows PC.

2
Set up a new virtual operating system

Open your virtualization software, create a new virtual machine, and install a fresh copy of Windows onto it.

3
Install the first Project version on the host

Install Project Professional 2016 normally on your primary, native Windows operating system.

4
Install the second Project version on the VM

Boot up the newly created virtual machine and run the installer for Project Online Desktop Premium exclusively within that isolated environment.

Install One Version Using a Virtual Machine
Virtualization Benefit: Using a virtual machine guarantees that neither application shares registry keys or underlying Office components, preventing unexpected crashes.
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Frequently Asked Questions

Why do Microsoft Project Professional 2016 and Project Online Desktop conflict?

These applications use different installation technologies (MSI vs. Click-to-Run) or share identical system registry paths that Microsoft prevents from running simultaneously on the same host operating system.

Can I install Visio 2016 along with Project Online Desktop?

Similar to Project conflicts, volume-licensed (MSI) versions of Visio 2016 often conflict with Click-to-Run Office 365 or Project Online products. You will likely need to use the same virtualization workaround.

Are there free virtualization tools to run a secondary MS Project?

Yes, Windows 10 and 11 Pro editions include Hyper-V for free. Alternatively, you can download Oracle VM VirtualBox at no cost to host your second environment.

Will using a virtual machine affect the performance of MS Project?

Running a virtual machine requires your PC to split its CPU and RAM resources. MS Project should run smoothly provided your host machine meets the hardware requirements for running two operating systems simultaneously.