1. Session Active - Start the Citrix Connection Center by double clicking on the ICA symbol in the notification area (clock). Check if ICA session is still active.
2. Reconnect Session - Reconnect the session by launching the application again or from the Citrix Web Interface with the reconnect button (if available).

3. Noticeable Traffic - Check the properties of the ICA session. Check if the session generates data to and from the Citrix server.
4. Network Active - Check if the network is still active. Refresh application on the Web Interface. Log off from the Web Interface and logon in the Web Interface again.
5. Normal Resource Usage - Application looks unresponsive. Check if application consumes too many resources like memory and CPU or causing the CPU queue to fill up. If abnormal resource usage is detected logoff or kill user process on Citrix server.
6. Force logoff after 15min- Disconnect the users session and try reconnecting. If the application is still unresponsive, let the application run for 15 minutes. Watch resource usage of the application during this period. If the application is still unresponsive, logoff the user session or kill the user process.
7. Fix Network - Take appropriate actions to repair the network.
8. Kill Application - Kill the application if it is using too many resources which can affect other users performance. Try logging of the user session first, otherwise kill the application or reset the session.
9. Launch new application - Launch a new application and watch if it is launched within the same session or a new session is created.
10. Original app unresponsive - If the original application is unresponsive a new session is created by launching a new application. Profile corruption, networking issues, database timeouts and macro’s (like VBA script) are often the cause of hanging or unresponsive applications.
11. Force logoff after 45 minutes - If normal resource usage is normal, let the unresponsive application run for least 45 minutes. Watch resource usage of the application during this period. If the application is still unresponsive, logoff the user session or kill the user process.
12. New App normal Speed - Is the new application running at expected or reasonable speed.
13. Original App problem - The original application is having a problem. The problem is often caused by networking issues, database timeouts or internal application faults. Make note of the last actions made in the application like selections and queries.
14. Contact application support - Contact application support to troubleshoot the application.
15. Other users affected - Do other users have the same problem ? If so, make note of the other users and contact Citrix administrators / Citrix support to troubleshoot server performance.
16. Shadow Session - If possible try to shadow the users session.
17. Expected behavior restored - Is the expected behavior of the application restored by shadowing the users session?
18. Reduce color quality - Does reducing the color quality (256 or 16 colors) on the users desktop increase the session performance?
19. Increase Session Memory / Update ICA Client - Increase session memory for the Citrix farm in the Citrix management console. If possible update the ICA client to at least a version 8 Client. If the problem happens often with the same application, the application is suffering on a GDI memory leak.