Failed to install package in Studio

Japan Knowledge Base
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1

:white_question_mark: Question
The “Project Dependencies” in Studio is displayed in red, and the error “Failed to install package” occurs.

Error
“Failed to install package”

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Example log output:

Access to `pkgs.dev.azure.com` failed during package download, and errors such as HTTP 503 are recorded.

Please let me know how to solve this issue.

:light_bulb: Answer

Cause
It is possible that the necessary communication is being blocked on the network path when Studio tries to download the required packages.

Solution
Make sure that you can access the communication endpoints required for downloading UiPath packages from your device.

Check if access to the necessary communication endpoints is blocked by proxies, firewalls, security products, or network restrictions.

Reference:

“Robot - Configuring Network Settings”

2

@system

This looks like a network/connectivity issue rather than a Studio package issue. The HTTP 503 error while accessing pkgs.dev.azure.com suggests Studio is unable to reach the package feed properly.

I would check:

  • Whether pkgs.dev.azure.com is accessible from the machine.
  • Proxy/firewall or security software restrictions.
  • UiPath package-feed and required network endpoints are allowlisted.
  • If using a corporate proxy, verify the proxy configuration in UiPath/Windows.
  • After fixing network access, restart Studio and try restoring the project dependencies again.

If the endpoint is already allowed, checking the Studio/Robot logs around the package download failure should help identify whether the issue is proxy, firewall, authentication, or temporary service availability.

3

@system If UiPath Studio cannot install a package, you first check network connectivity to the UiPath package feed, then verify proxy, firewall, and allowlisting. After resolving the connectivity issue, you restore the project dependencies.