Unable to launch Cisco Anyconnect application csc_ui.exe

I'm so sorry I missed your information.
Thank you very much for the detailed error information. Depending on what you provide, the error code -1073741819 (0xC0000005) indicates an "access violation," which usually means that the program is trying to access an area of memory that is not allowed. This condition can be due to several reasons:

Software conflicts: Some other application or service may conflict with Cisco AnyConnect, causing it to crash. You can try booting your computer in safe mode and see if the same issue still occurs.

Corrupted installation: If the installation file for AnyConnect is corrupted, it can lead to access conflicts. You can try to completely uninstall AnyConnect, make sure all related files and registry keys are cleared, and then reinstall the latest version of AnyConnect.

Driver issues: Some network drivers or system updates may not be compatible with AnyConnect. Make sure that the drivers for all network adapters are up to date, and check for Windows Update for pending updates.

Permissions issue: Ensure that the user has sufficient privileges to run Cisco AnyConnect. You can try running the program as an administrator and see if that fixes the problem.

Look at the minidump file: The minidump file you mentioned (csc_ui.exe_5.1.5.1171_20241030134152.mdmp) can provide more context about the crash. You can use a debugging tool, such as WinDbg, to analyze the file and see the call stack and thread information at the time of the crash.

We recommend that you follow the steps above to troubleshoot. If the problem persists, you may need to contact Cisco's technical support so that they can provide more in-depth analysis and assistance.

Hi Jing,

Thanks for your reply. Here is some error msg, does it mean anything to you?

Hello ,

Thank you for posting in Microsoft Community forum.
According to your description, you can check the logs and troubleshoot the issue by following these steps:

1. Open the "Event Viewer" (you can search for "Event Viewer" in the Start menu).
   Navigate to "Windows Logs">"Applications" to view error or warning messages related to Cisco AnyConnect. These logs may provide clues about application crashes or disappearances.
2. Cisco AnyConnect generates log files, typically located at the following path:
   C:\ProgramData\Cisco\Cisco AnyConnect Secure Mobility Client\Logs
   In this directory, you can find files ending in. log and check if there are any error messages or exceptions in these log files.
3. Check if there are any AnyConnect processes running in the task manager. Even if the icon disappears, the process may still be running in the background.
   If the AnyConnect process is found, try ending the process and restarting AnyConnect to see if the icon reappears.
4. Try right clicking on the taskbar, selecting "Taskbar Settings", and then check the settings in the "Notification Area" to ensure that the AnyConnect icon is not hidden.

If none of the above steps solve the problem, you can try completely uninstalling AnyConnect and reinstalling it. Ensure that all relevant configuration files and registry entries are cleared before installation.
If the problem persists, it is recommended to contact Cisco's technical support for further assistance.

I hope the information above is helpful.
If you have any questions or concerns, please feel free to let us know.

Regards,
Jill Zhou