VMware Workstation Player course

Reasons to Use VMware Workstation Player

Learn why VMware Workstation Player is useful for testing operating systems, running legacy applications, creating safe labs, and using virtual appliances.

VMware Workstation Player lets you run one or more virtual machines (VMs) on a physical computer. A virtual machine is a software-defined computer that uses virtualized CPU, memory, storage, and other hardware to run an operating system and applications.

This makes it possible to use another computing environment without replacing the operating system used for everyday work. Common reasons include evaluating Linux, supporting legacy applications, practicing administration, testing software, and deploying prebuilt virtual appliances.

How VMware Workstation Player works

The physical computer is the host. Its main operating system is the host operating system, such as Windows or Linux. VMware Workstation Player runs on that host operating system and provides the controls for creating and running VMs.

Each VM has virtual hardware, including virtual processors, memory, disks, network adapters, and sometimes virtual USB or other devices. The operating system installed inside the VM is the guest operating system. Software such as VMware Workstation Player acts as a hypervisor: it creates and runs VMs while allocating some physical resources to them.

Physical computer
└── Host operating system
    └── VMware Workstation Player
        ├── Virtual hardware → Guest operating system A
        └── Virtual hardware → Guest operating system B

The host continues running while a guest runs in a window or full-screen view. A VM therefore provides another computer-like environment without requiring another physical computer or a permanent change to the host installation. For an introduction to the components involved, see Virtual Machine Explained.

Common reasons to use VMware Workstation Player

Trying a different operating system

A VM is a convenient way to evaluate Linux, another Windows release, or another supported guest operating system. For example, a Windows user can explore a Linux desktop, use its terminal, install packages, and learn its file system while leaving the existing Windows installation unchanged.

This differs from dual boot. In a dual-boot setup, multiple operating systems are installed on the same computer, and the user restarts the computer to choose one. A VM generally does not require repartitioning the disk, does not require a reboot to change environments, and is easier to discard when the evaluation is complete.

Virtualization is not identical to installing an operating system directly. A guest may have lower graphics performance, limited access to specialized peripherals, or different driver behavior. Check the guest operating system's requirements before creating the VM.

Running legacy software

Legacy software is older software that may require an earlier operating system or may not work correctly on a current platform. A VM can provide an older guest operating system for an application that cannot run on the host.

For example, an organization might retain a line-of-business application that requires an older supported Windows release. The current host can remain the user's primary system while the application runs inside a suitably configured guest.

Virtualization does not solve every compatibility problem. The application must be compatible with the selected guest OS, and that guest must be usable with the available VMware version and virtual hardware. Missing runtimes, drivers, activation systems, copy-protection mechanisms, or specialized peripherals can still prevent the application from working. Licensing requirements apply to both the guest operating system and the application.

Safe experimentation and learning

A non-production guest is useful for learning system administration and testing changes that could make a normal installation difficult to use. Examples include changing system settings, editing the Windows registry, managing processes, installing and removing software, and testing scripts.

After an experiment, restore a known-good copy of the VM or recreate it. This repeatability is often easier than repairing a damaged physical installation.

A VM reduces the chance that a mistake will affect the host, but it does not eliminate risk. Host-guest integration means features that connect the guest to the host, such as shared folders, clipboard sharing, drag and drop, USB passthrough, printer access, and networking. These features are convenient but can transfer files, data, or unsafe changes across the boundary.

• Use only the integrations required for the task.
• Review shared folders and clipboard settings before testing unfamiliar software.
• Disconnect unnecessary USB devices and avoid passing sensitive devices into the guest.
• Keep a clean copy of the VM so experiments can be discarded.

See What Are Shared Folders and Drag And Drop for more information about common integration features.

Security research and malware analysis

Authorized security researchers sometimes use VMs to inspect suspicious software in a controlled laboratory. This use requires explicit authorization and compliance with applicable law, organizational policy, and research procedures. A dedicated lab should not contain personal files, production credentials, or sensitive business data.

High-level containment principles include:

• Separate the lab from production networks and sensitive systems.
• Use disconnected or tightly controlled networking when internet access is unnecessary.
• Minimize or disable shared folders, clipboard sharing, drag and drop, USB access, printer access, and other host-guest integration.
• Use non-sensitive test data and a dedicated host where appropriate.
• Maintain clean recovery copies and inspect the lab configuration before and after research.

A VM is not a guarantee of containment. Malicious code can spread through an incorrect network mode, enabled sharing features, unsafe USB access, or a virtualization vulnerability. Do not treat a general-purpose desktop VM as a complete security boundary.

Using virtual appliances

A virtual appliance is a preconfigured VM image containing an operating system and an application stack. A software stack is the combined operating system, runtime, services, database, web server, and application components needed by a service.

For example, a WordPress appliance may already include an operating system, web server, database, and WordPress installation. This can accelerate a local demonstration, development exercise, or learning project because the major dependencies may already be configured.

An appliance is convenient, but it still needs review and maintenance:

1. Verify that the image comes from a trustworthy source.
2. Check that its image format and virtual hardware are compatible with VMware Workstation Player.
3. Read the documentation for resource requirements, networking, startup behavior, and default credentials.
4. Change default credentials before using the appliance beyond a disposable demonstration.
5. Apply appropriate operating-system and application updates.
6. Review licensing for the operating system, application, database, and other included components.
7. Confirm whether the appliance should use NAT, bridged, host-only, or disconnected networking.

Appliances are well suited to demos, development, learning, and testing. They are not automatically secure, current, or ready for production merely because they are prebuilt.

Resource planning and networking

Every VM consumes part of the host's CPU, memory, and storage. Assign enough resources for the guest, while leaving sufficient capacity for the host operating system and other applications. Giving a VM too much memory or too many virtual CPU cores can make both the guest and host slower.

• CPU: Allocate only the virtual cores the workload needs.
• Memory: Leave comfortable working memory for the host; do not assign nearly all physical RAM to the guest.
• Disk: Plan for the guest OS, applications, updates, temporary files, and recovery copies. A virtual disk can consume substantial host storage.

VM network modes determine how the guest communicates:

• NAT: The guest shares the host's network connection through address translation. It is convenient for ordinary internet access but still provides a path out of the VM.
• Bridged networking: The guest appears as a separate device on the local network. This is useful when other devices must reach the guest, but it increases network exposure.
• Host-only networking: The guest can communicate with the host and possibly other host-only guests, without ordinary access to the external network unless additional routing is configured.
• Disconnected networking: The virtual network adapter has no active network connection. This is often the safest choice when networking is unnecessary.

For sensitive labs, prefer disconnected or tightly controlled networking and audit all sharing controls. For networking details, see Networking Configurations Overview.

Benefits and tradeoffs

Benefits

• Convenience: run another environment without rebooting.
• Isolation: separate many guest changes from the host when integration is limited.
• Repeatability: restore a known-good VM copy for repeated exercises.
• Parallel operating systems: use tools from different platforms during the same session.
• Portability: move a VM image to another compatible host, subject to licensing and compatibility constraints.
• Lower hardware requirements: several environments may be provided without several spare physical computers.

Tradeoffs

• Host CPU, memory, disk, and battery resources are consumed.
• Some workloads perform worse than they would on native hardware.
• VM files and virtual disks can require substantial storage.
• Guest operating systems and applications may require separate licenses.
• Virtual hardware may not support every specialized device or feature.
• The user remains responsible for updates, credentials, backups, networking, and security boundaries.

Physical hardware or dual booting may be more appropriate for graphics-intensive workloads, hardware-specific testing, real-time workloads, specialized peripherals, or situations requiring maximum native performance. A separate computer may also be preferable when strong physical separation is more important than convenience.

Choosing the right approach

Before creating a VM, check the host's available CPU, memory, and disk space, along with the guest operating system's requirements. Also confirm licensing, networking needs, device requirements, and how the VM will be updated and backed up.

Troubleshooting common problems

The guest operating system feels slow

Likely causes include insufficient host memory or CPU capacity, too many running VMs, slow or nearly full host storage, or an allocation that is too low for the guest. Close unnecessary host applications, review available resources, adjust the VM allocation conservatively, and confirm that the host disk has free space.

For memory changes, see Changing The Memory Allocation.

A legacy application still does not work

Confirm that the guest OS is the version required by the application. Then check dependencies, drivers, licensing or activation restrictions, and any need for specialized physical hardware. Virtualization cannot provide a device or operating-system behavior that the application fundamentally requires but the VM does not support.

A virtual appliance does not start or cannot be reached

Verify the image format, virtual hardware compatibility, resource requirements, network mode, default credentials, and service status. An appliance may boot successfully but still require initial configuration before its application is reachable.

The VM can access host files or the local network unexpectedly

Audit shared folders, clipboard integration, drag and drop, USB passthrough, printer access, and the selected network mode. Disable unnecessary integration and choose a more restrictive network configuration when isolation matters.

Next topics

To continue learning, start with VMware Workstation Player Course, then review Install VMware Workstation Player On Windows or Install VMware Workstation Player On Linux. You can also review Virtual Disks Explained and Networking Configurations Overview before creating a guest.