# 2025.10.3

> 2025.10.3 release notes for Studio.

**Release date: December 11, 2025**

## Bug fixes

* An expression of type `string.Format("Test {0}", str_text)` used in the **Body** field of the **Send SMTP Email** activity was incorrectly converted into `string.Format("Test {0}", str_text)` when reopening the workflow containing the **Send SMTP Email** activity.
* The properties of some Integration Service activities were not visible in the **Designer** after selecting a valid connection.

## Activity package versions

The following activity packages and versions are included in the `UiPathStudio.msi` installer and can be found in the local feed.

| Activity package | Version |
| --- | --- |
| UiPath.UIAutomation.Activities | [v25.10.21](https://docs.uipath.com/activities/other/latest/ui-automation/release-notes-uipath-uiautomation-activities-v25-10) |
| UiPath.System.Activities | [v25.10.3](https://docs.uipath.com/activities/other/latest/workflow/release-notes-uipath-system-activities#v25103) |
| UiPath.Excel.Activities | [v3.3.1](https://docs.uipath.com/activities/other/latest/productivity/release-notes-uipath-excel-activities#v331) |
| UiPath.Mail.Activities | [v2.3.10](https://docs.uipath.com/activities/other/latest/productivity/release-notes-uipath-mail-activities#v2310) |
| UiPath.Word.Activities | [v2.2.0](https://docs.uipath.com/activities/other/latest/productivity/release-notes-uipath-word-activities#v220) |
| UiPath.ComplexScenarios.Activities | [v1.5.1](https://docs.uipath.com/activities/other/latest/workflow/release-notes-uipath-complexscenarios-activities#v151) |
| UiPath.Presentations.Activities | [v2.3.1](https://docs.uipath.com/activities/other/latest/productivity/release-notes-uipath-presentations-activities#v231) |
| UiPath.Testing.Activities | [v25.10.0](https://docs.uipath.com/activities/other/latest/workflow/release-notes-uipath-testing-activities#v25100) |
| UiPath.WebAPI.Activities | [v2.3.1](https://docs.uipath.com/activities/other/latest/developer/release-notes-uipath-web-activities#v231) |
| UiPath.Form.Activities | [v25.10.0](https://docs.uipath.com/activities/other/latest/workflow/release-notes-uipath-form-activities#v25100) |
| UiPath.Callout.Activities | [v25.10.0](https://docs.uipath.com/activities/other/latest/workflow/release-notes-uipath-callout-activities#v251010) |