> Source: [sk100191](https://support.checkpoint.com/results/sk/sk100191)

# sk100191 - cpda.exe crashes with error: "Check Point Endpoint Security has stopped working"

| Property | Value |
|----------|-------|
| Solution ID | sk100191 |
| Date Created | 2014-04-10 |
| Last Modified | 2016-05-02 |
| Technical Level | General |
| Products | Endpoint Security |
| Versions | Cloud, E89.X, E88.X |
| OS | Windows |

## Symptoms

- * cpda.exe crashes with error: "Check Point Endpoint Security has stopped working"
* Event Viewer shows the following message:  
  Fault bucket 0, type 0  
  Event Name: CLR20r3  
  Response: Not available  
  Cab Id: 0 Problem signature: P1: cptray.exe P2: 8.14.0.5726 P3: 51e7d0ac P4: mscorlib P5: 2.0.0.0 P6: 5265d021 P7: 3456 P8: 15a P9: System.UnauthorizedAccess P10:

## Cause

The Endpoint Security client is crashing due to multiple sessions created.

This issue can occur if connecting via RDP to the machine while the user is still logged on.

## Solution

The multiple sessions feature is supported since:

* [Endpoint Security and Remote Access VPN E80.61](https://supportcenter.checkpoint.com/supportcenter/portal?eventSubmit_doGoviewsolutiondetails=&solutionid=sk105123)

Check Point recommends to always upgrade to the most recent version ([Security Gateway](https://supportcenter.checkpoint.com/supportcenter/portal?eventSubmit_doShowproductpage&productTab=downloads&product=435) / [VSX](https://supportcenter.checkpoint.com/supportcenter/portal?eventSubmit_doShowproductpage&productTab=downloads&product=359) / [Security Management Server](https://supportcenter.checkpoint.com/supportcenter/portal?eventSubmit_doShowproductpage&productTab=downloads&product=184) / [Multi-Domain Security Management Server](https://supportcenter.checkpoint.com/supportcenter/portal?eventSubmit_doShowproductpage&productTab=downloads&product=166) / [SmartConsole](https://supportcenter.checkpoint.com/supportcenter/portal?eventSubmit_doShowproductpage&productTab=downloads&product=191)).

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