How do I download and install Prepar3D on PC?
To download and install Prepar3D on PC, obtain the appropriate licence through the official Prepar3D portal, download the complete installer for that licensed version, extract every file to a local folder, and run the main setup program. Activate when prompted, then launch the simulator once before adding aircraft or scenery.
What should I check before downloading Prepar3D?
Before downloading Prepar3D, confirm that your PC meets the requirements published for the exact major release you are installing. Prepar3D is Windows-only, and supported Windows editions, graphics features and storage requirements differ between releases.
- Licence and version: A licence normally applies to a particular major version. Do not assume that owning an older release unlocks a newer one.
- Free storage: Allow room for the compressed download, its extracted files and the installed simulator. These can exist together until setup is complete.
- Windows permissions: Use an account allowed to install software and approve the User Account Control prompt when it appears.
- Clean destination: Never direct Prepar3D into an FSX folder or the folder belonging to another Prepar3D major version.
Prepar3D is a separate simulator rather than an FSX update. Our explanation of Prepar3D and FSX licensing, folders and compatibility covers the practical differences before you commit to an installation.
How do I install Prepar3D step by step?
Use the complete Prepar3D package and its main setup executable for a normal installation. The separate Client, Content and Scenery installers are intended for specific repair or update procedures, not as substitutes for the initial setup program.
- Sign in to the official account portal. Open the downloads attached to your licence and select the required Prepar3D major version. For an ordinary fresh installation, choose the latest complete build available under that licence unless your organisation requires a particular build.
- Download the full package. Save it to a local drive. If the portal supplies a checksum, compare it after downloading; a mismatch means the archive is incomplete or corrupted.
- Extract the entire archive. Create a short temporary folder such as
C:\P3D-Installand extract every file into it. Do not run setup from inside the compressed archive, a cloud-synchronised folder, a network drive or removable storage. - Run the main setup program. Open
Setup_Prepar3D.exeand approve the Windows security prompt. This bootstrapper installs the required simulator components and prerequisites in the correct order. Do not begin by openingInstall_Client.msior another component package. - Choose the installation folder. The default location is supported and is the safest choice for most users. If you choose another location, use an empty dedicated folder rather than an existing simulator directory.
- Complete activation. Enter or confirm the licence details when requested. The licence must match the major Prepar3D version being installed. Restart Windows if setup requests it.
- Make a clean first flight. Start Prepar3D without add-ons, allow it to create its configuration and shader files, then load a default aircraft at a default airport. Check graphics, sound and controller input before changing multiple settings.
We do not recommend permanently forcing Prepar3D to run as administrator unless a documented permission problem requires it. Mixing elevated and non-elevated add-on tools can create communication and file-access problems of its own.
Which Prepar3D version should I download?
Download the major version covered by your licence and required by your add-ons or training environment. Aircraft with compiled gauges, utilities, weather programs and scenery installers may support only named Prepar3D releases, even when their underlying files look similar.
Major versions are normally separate installations and should have separate folders. A point-release update within the same major version is different: follow the release-specific update procedure because Client, Content and Scenery components may be updated separately. Back up configuration files and confirm add-on compatibility before replacing an established installation.
Do not copy an entire FSX or older Prepar3D folder into the new installation. Install each compatible add-on using its own installer or package method instead.
Why will Prepar3D not install or start?
Most Prepar3D installation failures come from an archive that was not fully extracted, an incomplete download, running an individual MSI package, insufficient storage or a licence that does not match the installer.
| Symptom | Likely cause and fix |
|---|---|
Setup_Prepar3D.exe is missing or does nothing | Extract the complete archive again to a local folder. Check that the download finished and that security software did not quarantine part of it. |
| Archive, cabinet or package error | Delete the damaged download and obtain a fresh copy. Compare its checksum if one is provided and confirm there is enough room for extraction. |
| Only part of the simulator installs | The Client or another MSI may have been run directly. Restart Windows, then rerun the main setup executable so it can install all components in sequence. |
| Windows reports another installation is running | Finish or cancel the other Windows Installer task, restart the PC and run Prepar3D setup again. |
| Activation is rejected | Confirm that the licence belongs to the same major version as the installer, re-enter the details carefully and check the PC's date and internet connection. |
| Prepar3D installs but will not open | Restart Windows and test without add-ons or compatibility settings. If it still fails, repair the installed Client through Windows' installed-apps controls and verify the graphics driver supports that release. |
Do not disable security software as a routine fix. If it has blocked a file, verify that the package came directly from the official account portal and matches any supplied checksum before restoring or allowing it.
When should I install Prepar3D add-ons?
Install add-ons only after the stock simulator has completed a successful flight. This gives you a known working baseline and makes the first faulty aircraft, scenery package or utility much easier to identify.
Keep add-ons outside the core simulator folder when the package supports the Prepar3D add-on system. Prepar3D v5 users can follow our external scenery and add-on.xml installation guidance, while users of other releases should check that the instructions explicitly name their version.
Our version-labelled Prepar3D freeware library provides aircraft, scenery and utilities after the base installation is working. If an installed aircraft is absent from the selection menu, use these folder, archive and compatibility checks for missing aircraft before reinstalling the whole simulator.