Installing Extensions and Plugins
There are three main ways to install in Primo RPA Studio:
- Manual installation via the Studio interface
- Installation via the command line
- Automatic installation
1. Manual Installation via the Studio Interface
- Open Primo RPA Studio
- Go to the menu: File → Settings → Tools → Extensions
- Select the desired browser (Chrome, Firefox, Edge, Yandex)
A list of available options will appear:
| Installation Option | Who has access | Requires admin rights | Features |
|---|---|---|---|
| Store (Current user) | Only you | No | Simple installation from the extension store |
| Store (All users) | Everyone on PC | Yes | Installation for all computer accounts |
| Packed (Current user) | Only you | No | Installation of CRX file in your profile |
| Packed (All users) | Everyone on PC | Yes | Global installation of CRX file |
| Unpacked | Only you | No | Loading from a folder (requires manual enabling) |
The browser will automatically close during installation (with a warning).
After Installation
Unpacked extensions require manual enabling in the browser.
Manifest V3 requires reloading the page to execute scripts
- You need to enable Allow custom scripts in the extension properties
See the sections:
2. Installation via the Command Line
Below you can find information about ways to install extensions and plugins from the command line.
Browser Extensions
LTools.WebBrowser.Native.exe install=<browser> lang=<language> mode=<mode> manifest=v3Supported arguments:
- browser — browser type: CHROME, FIREFOX, EDGE, YANDEX.
- language — installation language: EN, RU.
- mode — extension installation mode. Available values:
- packed — packed;
- storelocal — from the store for the current user;
- unpacked — unpacked.
- manifest — used to install a browser extension based on the new version 3 manifest . The only valid value for the parameter is
v3. The Manifest V3-based extension is designed to avoid compatibility issues in later versions of Chrome, Yandex, Edge browsers based on the Chromium engine. If the parametermanifestis not specified, the extension for Manifest V2 will be installed by default.
Versions of Primo RPA Extension for Manifest V2 are numbered from 1.xx (e.g., 1.66), for Manifest V3 — from 3.xx (e.g., 3.66).
If you want to change the manifest version for the installed extension, then first delete the extension based on the old manifest and only then install the new one. Note that it is impossible to install an extension based on V3 for the Firefox browser.
Features of working with Manifest V2 extension
The extension based on the second version of the manifest (1.xx) may work unstable due to Google’s policies regarding old extensions not intended for Manifest V3.
After August 8, 2025 with the release of Chrome 139 and Edge 139 support for extensions with Manifest V2 in these browsers will be completely terminated. This means that versions “Primo RPA Extension” 1.6* and 1.8* will stop working in Chrome and Edge.
To continue working with Manifest V2, you can add a policy ExtensionManifestV2Availability with the value 2.
For Chrome, this can be done either through group policies or manually, by running the script from the administrator in cmd or Powershell on the agent server (client computer):
reg add HKLM\SOFTWARE\Policies\Google\Chrome /v ExtensionManifestV2Availability /t REG_DWORD /d 2 /fFor Edge:
Similarly, but with the path HKLM\SOFTWARE\Policies\Microsoft\Edge.
Limitation: According to Google’s official documentation , support for Manifest V2 will be completely disabled in mid-2025, regardless of this policy.
Features of working with Manifest V3 extension
Primo RPA Extension based on Manifest V3 is a new solution, so it is recommended to check the functionality of the project with browser elements in the Studio before adding it to the Orchestrator or Robor Runner.
Example of installing a browser extension
Installing a browser extension for Manifest V3 without internet:
LTools.WebBrowser.Native.exe install=CHROME lang=RU mode=packed manifest=v3Installing a browser extension for Manifest V3 with internet:
LTools.WebBrowser.Native.exe install=CHROME lang=RU mode=storelocal manifest=v3If you want to install an extension for Manifest V2, just do not specify the manifest parameter.
Plugins
RDP
Primo.RemoteAgent.exe InstallClientJava
Extensions\JavaBridge.ps1Automatic installation of browser extensions
See more here.