Prism for AL
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Current Release
The latest production release is Prism for AL 5.0.1 SE.
On Windows 10, download the compat package instead, and read how to install it.
MCP notification: Prism for AL 5.0.1 SE updates the MCP tools Prism offers AI agents. After upgrading, start a new agent session; in Visual Studio Code, first run MCP: Reset Cached Tools from the Command Palette, then MCP: List Servers, select the Prism server and choose Start Server or Restart Server.
Performance Tip: For optimal graph loading performance, please review
your anti-virus path exceptions.
Need a trial license? After download and installation, get your trial license from Prism's main window.
See Release Notes for product history and read the EULA for terms and conditions.
Previous Release
Visual Studio Code Extension
Local application data file performance and anti-virus programs
When Prism for AL meets a package for the first time,
the individual source files are cached in the file system. Likewise, Prism for AL uses
the file system heavily when generating a code graph. Anti-virus programs can
slow down these processes significantly, so you may consider excluding Prism for AL's local application data path
(this is %LOCALAPPDATA%\Statical\PrismAL and/or a corresponding MSIX virtualized path)
from being scanned.
No matter which anti-virus program you are using, please use Prism for AL's Help | Optimize Prism Package Cache Performance menu to copy to clipboard a PowerShell script that excludes Prism's local application data paths from Windows Defender. You need to run the script as administrator. If you use a different anti-virus program, you can read the paths to exclude in the script.
Anti-virus false positives
A note on anti-virus software and how to solve a false positive detection.
Supported Versions of Business Central
| BC Version | Description |
|---|---|
| 29 NEW | Preliminary support |
| 15 .. 28 | Officially supported |
| 14 and NAV 2018 | Supported for extension development; the C/AL base application is loaded as a symbol file (no code in triggers/procedures) |
System Requirements
| Operating System | Description |
|---|---|
| Windows 11 | Officially supported |
| Windows 10 | Supported with the compat package; the standard package does not install below Windows build 22000 |
| Processor (System Type) | Description |
|---|---|
| 64-bit | Officially supported |
| System Fonts | Description |
|---|---|
| Segoe Fluent Icons | This font is required in order to display all icons correctly. The font ships with Windows 11, but for older OS versions you need to download a zip file with the font and EULA and then unzip and install. (Unfortunately, due to Microsoft's licensing, we are not allowed to distribute the font.) |
Installing the compat package
Windows 10 and Windows Server 2016 through 2022 are older than Windows build 22000, and cannot install
the standard package. The compat package, Prism for AL 5.0.1.1 SE Setup x64 Compat.msix, is the same release
packaged so that it installs on them. It shows as Prism for AL (compat) in the Start menu.
- Uninstall any existing Prism for AL first. The compat package has a different identity, so it installs alongside the standard package rather than replacing it. This is only needed once: later compat packages upgrade your compat installation.
- Your license and recent workspaces carry over, so there is nothing to enter again.
- The package cache starts empty, so the first workspace load is slow. Existing anti-virus exclusions point at the old location: run Help | Optimize Prism Package Cache Performance again to get the script for the new one, see anti-virus exceptions.