Environment
• macOS 26.5
• Apple Silicon M5
• Google Chrome 150.0.7871.187
• Microsoft Edge (latest version) - same behavior
• UiPath Assistant 2026.0.197
• UiPath Studio Web (RPA Workflow)
• Browser extension installed through UiPath Assistant
Issue
I cannot configure the “Use Application/Browser” activity in Studio Web.
When I click “Indicate on local machine”, the browser enters selection mode, but instead of recognizing the webpage as a browser target, Studio Web fails with:
“Cannot communicate with browser”
As a result, the activity cannot be configured or always be figured as application.
Troubleshooting already completed
I have already completed the following troubleshooting steps:
• Reinstalled Chrome extension from UiPath Assistant
• Tested both Google Chrome and Microsoft Edge
• Restarted browser and UiPath Assistant multiple times
• Verified UiPath Assistant is Connected and Licensed
• Verified Chrome/Edge extensions are enabled
• Verified browser permission “Apps on your device” is enabled
• Granted Accessibility permission to UiPath Assistant
• Granted Screen Recording permission
• Tested with BetterDisplay completely closed
• Tested different browser windows and different websites
• Exported Diagnostic Archive
Diagnostic findings
The diagnostic archive contains the following runtime errors:
Could not retrieve bounds for window ID
PermissionsUncertain
The browser extension itself appears to be installed correctly.
The issue seems to happen when the macOS runtime attempts to retrieve the browser window information before browser communication is established.
Additional information
Health Analyzer shows:
• Use Application/Browser activity is not configured
• Interaction mode “Chromium API” should be used only on Chromium browsers
However, this happens because the browser target cannot be captured successfully.
Request:
Could someone from the Studio Web / macOS Runtime team help analyze this issue?
I can provide the exported Diagnostic Archive if needed.
I would also like to know whether this is a known compatibility issue with:
• macOS 26.5
• Apple Silicon M5
• UiPath Assistant 2026.0.197
• Studio Web Local Runtime
Hi @qiheng002,
Maybe the browser extension is installed correctly, but the Studio Web Local Runtime on macOS cannot obtain browser window information, preventing communication with Chrome/Edge. This may be a known compatibility issue between macOS 26.5 (Apple Silicon M5) and UiPath Assistant 2026.0.197.
You can try once with these solutions if it works for you.
Re-grant macOS permissions
System Settings → Privacy & Security
Remove and re-add UiPath Assistant under:
Accessibility
Screen Recording
Automation (if available)
Restart macOS afterwards.
Reset UiPath Browser Extension
Remove Chrome/Edge extension completely.
Reinstall from UiPath Assistant.
Restart browser and Assistant.
Use Chromium API Mode
In Use Application/Browser, ensure Interaction Mode = Chromium API when targeting Chrome/Edge.
Update Components
Upgrade to the latest:
UiPath Assistant
Studio Web Local Runtime
Browser Extensions
There may be a compatibility issue with macOS 26.5 + Apple Silicon M5 in version 2026.0.197.
Test with a New macOS User Profile
Create a new local macOS user.
Install UiPath Assistant and test target indication.
If it works, the issue is permission-related in the original profile.
If these things doesn’t work then you can escalate the issue to UiPath Support team.
You can raise this issue with UiPath Support team because after trying all these methods if you are still facing the same issue then you should check with Uipah support team once.
honestly your troubleshooting list already covers everything id normally suggest, and with jiayao confirming the exact same error independently this really looks like a platform bug on the macOS runtime side, not something fixable from the user end
one thing that hasnt been mentioned that i’d test quickly before escalating, “Could not retrieve bounds for window ID” points to the Accessibility API failing to read window position/size, and thats known to get flaky when Stage Manager is on or when the browser window is in a tiled/split view instead of a normal floating window. If you have Stage Manager enabled try turning it off and test with a single plain browser window, no fullscreen, no split view, just to rule that out
but given two separate users hit the identical error on Apple Silicon with the same Assistant version, id treat that macOS 26.5 + M5 + Assistant 2026.0.197 combination as the real suspect and not spend more time on permissions/reinstalls, you already exhausted that path
you have the diagnostic archive ready which is exactly what support needs, id escalate that directly rather than waiting on the forum, this smells like something that needs an actual fix on UiPath’s side for that runtime version.
The “Cannot communicate with browser” error in UiPath Studio Web was resolved after checking the required macOS permissions and reconnecting UiPath Assistant with the browser extension.
After that, I restarted UiPath Assistant and the browser, and the “Indicate on local machine” option started working correctly.