- Release Notes
- Getting Started
- Setup and Configuration
- Automation Projects
- Dependencies
- Types of Workflows
- Control Flow
- File Comparison
- Automation Best Practices
- Source Control Integration
- Debugging
- Logging
- The Diagnostic Tool
- Workflow Analyzer
- About Workflow Analyzer
- ST-NMG-001 - Variables Naming Convention
- ST-NMG-002 - Arguments Naming Convention
- ST-NMG-004 - Display Name Duplication
- ST-NMG-005 - Variable Overrides Variable
- ST-NMG-006 - Variable Overrides Argument
- ST-NMG-008 - Variable Length Exceeded
- ST-NMG-009 - Prefix Datatable Variables
- ST-NMG-011 - Prefix Datatable Arguments
- ST-NMG-012 - Argument Default Values
- ST-NMG-016 - Argument Length Exceeded
- ST-NMG-017 - Class name matches default namespace
- ST-DBP-002 - High Arguments Count
- ST-DBP-003 - Empty Catch Block
- ST-DBP-007 - Multiple Flowchart Layers
- ST-DPB-010 - Multiple instances of [Workflow] or [Test Case]
- ST-DBP-020 - Undefined Output Properties
- ST-DBP-021 - Hardcoded Timeout
- ST-DBP-023 - Empty Workflow
- ST-DBP-024 - Persistence Activity Check
- ST-DBP-025 - Variables Serialization Prerequisite
- ST-DBP-026 - Delay Activity Usage
- ST-DBP-027 - Persistence Best Practice
- ST-DBP-028 - Arguments Serialization Prerequisite
- ST-USG-005 - Hardcoded Activity Arguments
- ST-USG-009 - Unused Variables
- ST-USG-010 - Unused Dependencies
- ST-USG-014 - Package Restrictions
- ST-USG-020 - Minimum Log Messages
- ST-USG-024 - Unused Saved for Later
- ST-USG-025 - Saved Value Misuse
- ST-USG-026 - Activity Restrictions
- ST-USG-027 - Required Packages
- ST-USG-028 - Restrict Invoke File Templates
- ST-USG-032 - Required Tags
- ST-USG-034 - Automation Hub URL
- Variables
- Arguments
- Imported Namespaces
- Coded automations
- Introduction
- Registering custom services
- Before and After contexts
- Generating code
- Generating coded test case from manual test cases
- Trigger-based Attended Automation
- Recording
- UI Elements
- Selectors
- Object Repository
- Data Scraping
- Image and Text Automation
- Automating Citrix Technologies
- RDP Automation
- VMware Horizon Automation
- Salesforce Automation
- SAP Automation
- macOS UI Automation
- The ScreenScrapeJavaSupport Tool
- The WebDriver Protocol
- Extensions
- About extensions
- SetupExtensions tool
- UiPathRemoteRuntime.exe is not running in the remote session
- UiPath Remote Runtime blocks Citrix session from being closed
- UiPath Remote Runtime causes memory leak
- UiPath.UIAutomation.Activities packages and UiPath Remote Runtime versions mismatch
- The required UiPath extension is not installed on the remote machine
- Screen resolution settings
- Chrome Group Policies
- Cannot communicate with the browser
- Chrome extension is removed automatically
- The extension may have been corrupted
- Check if the extension for Chrome is installed and enabled
- Check if ChromeNativeMessaging.exe is running
- Check if ComSpec variable is defined correctly
- Enable access to file URLs and Incognito mode
- Multiple browser profiles
- Group Policy conflict
- Known issues specific to MV3 extensions
- List of extensions for Chrome
- Chrome Extension on Mac
- Edge Group Policies
- Cannot communicate with the browser
- Edge extension is removed automatically
- The extension may have been corrupted
- Check if the Extension for Microsoft Edge is installed and enabled
- Check if ChromeNativeMessaging.exe is running
- Check if ComSpec variable is defined correctly
- Enable access to file URLs and InPrivate mode
- Multiple browser profiles
- Group Policy conflict
- Known issues specific to MV3 extensions
- List of extensions for Edge
- Extension for Safari
- Extension for VMware Horizon
- Extension for Amazon WorkSpaces
- SAP Solution Manager plugin
- Excel Add-in
- Test Suite - Studio
- Troubleshooting
Cannot communicate with the browser
Cannot communicate with the browser, please check the UiPath extension
error can indicate one of the following issues.
Cannot communicate with the browser, please check the UiPath
extension error message, the first step to take is to Check if the Extension for Microsoft Edge is installed and enabled.
The native host must be running to enable the communication between the Robot and the UiPath Extension.
Use the following checklist to ensure the native host is running:
- Check if ChromeNativeMessaging.exe is running
- Check if ComSpec variable is defined correctly
- Check if the antivirus software
blocks access to
ChromeNativeMessaging.exe. To fix this issue, add the following folder to the antivirus allowlist:-
C:\Program Files (x86)\Common Files\UiPath\UiPath.Common– if you're using Studio version 2023.10 and newer. -
C:\ProgramData\UiPath\UiPath.Common– if you're using Studio versions older than 2023.10.
-
The browser extension can fail to initialize on slow machines with high CPU usage. This issue can have one of two causes:
- The Open Browser activity has an insufficient timeout.
- In some cases, this Chromium bug can cause the extension to fail to initialize and the browser must be restarted. This issue affects all browser extensions.
Increase the Open Browser timeout. You can find more details on how to do that in the Known issues specific to MV3 extensions page under the Open Browser activity has insufficient timeout section.
If you’ve increased the timeout and the issue persists, set to True the Enable retry setting introduced with UI Automation version 2023.10 in Project Settings > UI Automation Classic > Browser > Enable retry for OpenBrowser Edge.
When this setting is enabled, the Open Browser logic restarts the browser several times if the Native Host failed to initialize within the given timeout.
The browser extension may be corrupted due to a roaming user profile. For more information on roaming user profiles, see the Windows official documentation.
To solve this issue, see The extension may have been corrupted.
