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An unusual issue in a Citrix environment:
Users work normally in their virtual session. But as soon as content is copied from the local Windows client into a Citrix application, the application crashes or the entire ICA session disconnects.
❌ The application exits unexpectedly
❌ The Citrix session loses its connection
❌ The issue occurs when pasting content
✅ Copying from the VDA to the client still works
🔍 Root cause
Under HDX-99696, Citrix documents a regression in Citrix Workspace App for Windows 2511.1.
It affects clipboard content transferred from the local endpoint into the HDX session.
According to Citrix, the opposite direction is unaffected.
This makes troubleshooting particularly interesting: at first glance, it looks like an application crash or an unstable VDA.
🛠️ My troubleshooting approach
First, I check the Workspace App version installed on the endpoint.
Next, I test both clipboard directions separately:
➡️ Client → VDA
⬅️ VDA → Client
Then I check Windows Event Viewer for application crashes and correlate the timestamps with the Citrix disconnects.
It is also important to test different clipboard content: plain text, formatted text and files.
✅ The fix
Citrix resolved the issue in Workspace App 2607 LTSR.
I would therefore first update an affected endpoint to the corrected version and attempt to reproduce the issue again.
There is no need to disable HDX Clipboard Redirection across the board or make unnecessary changes to the VDA configuration.
💡 My takeaway
Not every application crash within a Citrix session is caused by the application or the VDA.
Sometimes the actual cause is on the endpoint, and a simple copy-and-paste operation is enough to end the session.
HDX-99696: a small user action with significant consequences.
