Hi! Upgraded from Enterprise Studio 2024.10.9 to latest Studio version2025.10.
(However Studio help tab shows 2026.0.179 STS)
Have anyone experienced this:
I had to remove and recreate some activities formerly working: a simple Check App State reported a non-showing element as showing. This step worked perfectly before update.
When editing some properties in a project created in 2024.10.9, Studio now freeze and become unresponsive. seem like a small dialogue pops up in a fraction of a second but you can’t find that anywhere on your desktop.
- However you can run current open workflow from the play button in the windows taskbar.
- Need to close Studio from Windows Task Manager.
I’ve seen similar issues after upgrading. Most of these activity-related problems usually come down to version mismatches — especially between UiAutomation.Activities and System.Activities. Restoring the versions used during development typically resolves it.
Also, note that the STS (Short-Term Support) builds often introduce features that aren’t yet fully aligned with Enterprise stability requirements. For enterprise development, it’s generally better to stick with the LTS (Long-Term Support) version to avoid compatibility and performance issues.
Regarding the freezing or unresponsiveness — newer Studio releases tend to have higher RAM and CPU requirements. This can sometimes cause UI delays or hangs, particularly when editing older projects or switching between modern and classic activities. If you notice instability, using classic activities can sometimes provide more consistent performance (though you’ll miss some of the latest features).
In short:
- Restore the original activity package versions.
- Avoid using STS builds for enterprise projects.
- Check system performance and activity type compatibility.
- For stability, prefer the latest LTS release.
Thanks Mohamed for the answer. However I was not aware of installing a STS version when downloading the latest release. When you click “Download Studio” you get what you get: just a “UiPAthPlatform.msi” and not any version information.
Hi @joakim.ulfeldt,
You may try to skip the direct Download Studio button. Click the (?) next to your profile icon, go to Downloads, and grab the LTS build from there.
If you’re on a Community license, you usually only get the STS release by default, so you won’t see version selection options.
If you still only see one installer, look for Other versions. From there, you should be able to pick an older build—something like 24.10 or 24.3—which will work fine.
I added some screenshots that may support you.
Hope that helps.
