I am using this activity for by workflow but this error is coming when workflow is runnning on trigger , I’ve Done Unistall and then Install and ALos Publish but this Error still occur.
Hi @rpasolar_07
This is a package version mismatch on the Robot/trigger machine, not a workflow issue.
Why it happens:
Your process was built with UiPath.System.Activities v25.10.5, but the machine where the trigger runs does NOT have this package available (or the Robot cache is corrupted).
- On the robot machine:
- Close Assistant
- Delete NuGet cache:
C:\Users\<user>\.nuget\packages\uipath.system.activities - Open UiPath Assistant → Preferences → Clear cache
- Ensure Robot / Assistant version matches Studio (same major version)
- Reopen Assistant → Let it auto-download dependencies
- Republish the process and restart the trigger job
If it still fails:
- Check Orchestrator → Tenant → Packages
- Confirm UiPath.System.Activities 25.10.5 is listed and accessible
- If using restricted feeds, allow this version
Welcome to the community
few things here
- Either the version of system activities is not available or not being downlaoded
- To ensure fresh version to be downloaded try to remove the system packages folder from
c:\users\<Username>\.nuget. then restart process it should auto download - if it does not download either firewalls are preventing the download or the package is not available in feeds..then either you need to disable firewall or add the latest package feed which is https://pkgs.dev.azure.com/uipath/Public.Feeds/_packaging/UiPath-Official/nuget/v3/index.json
- For a short term resolution you can as well copy the same folder from the dev machine to the target prod machine where it is running ..the package would be in same location on dev machien where it would have been built
c:\users\<Username>\.nuget
How to add feeds is here
cheers
Hi @rpasolar_07
Might be error appears when the robot machine does not have the same version of the UiPath.System.Activities package (25.10.5.0) that your project was built with. Update the activity package on the robot by going to Orchestrator → Tenant Packages and make sure the UiPath.System.Activities version on the robot matches your project’s version. Then republish the project and update the process so the trigger runs with the correct package version.
HAppy automation
Hi @rpasolar_07
Welcome to the community!
Please check some details:
Check system activities, check robot version as well check nuget file and restart robot services.
Hope it works!