Citrix Secure Access SSL VPN client not working

Products

• Endpoint Protection

Issue/Introduction

Latest version 25.x of Citrix Secure Access SSL VPN client conflicting with Application Device Control (ADC). However, there is not evidence that ADC block the Citrix application.

From Citrix_nssslvpn.txt logs:

2025-11-19 15:02:56.734 | 00828 |   EVENT | S | NONE | Getting the value for feature: EnableSentry with url: <url> |
2025-11-19 15:02:56.734 | 00828 | VERBOSE | D | NONE | The registry value for feature: EnableSentry is not defined or the feature data is empty |
2025-11-19 15:02:56.734 | 00828 |   DEBUG | S | NONE | Reading the boolean feature flag: EnableSentry for url: <url>/ |
2025-11-19 15:02:56.734 | 00828 |   DEBUG | D | NONE | Successfully decoded canonicalized url |
2025-11-19 15:02:56.734 | 00828 |   EVENT | S | NONE | Getting status of feature flag: CSACLIENTS-8837-Disable-Sentry for FQDN: url: <url>/ |
2025-11-19 15:02:56.734 | 00828 |   EVENT | S | NONE | The feature flag: CSACLIENTS-8837-Disable-Sentry is Disabled |
2025-11-19 15:02:56.734 | 00828 | VERBOSE | D | NONE | Flag value: 0 was obtained from the Feature Flag service for feature EnableSentry |
2025-11-19 15:02:56.734 | 00828 |   DEBUG | D | NONE | The feature flag value was read from the service. Updating the feature data with the new value. |
2025-11-19 15:02:56.734 | 00828 |   EVENT | S | NONE |  CrashReporter : Sentry feature is enabled |
2025-11-19 15:02:56.734 | 00828 |   EVENT | D | NONE | CrashReporter : library loaded successfully. Configure crash reporter now |
2025-11-19 15:02:56.734 | 00828 |   DEBUG | D | NONE | CrashReporter: sentry-options to set csa dsn successful |
2025-11-19 15:02:56.735 | 00828 |   DEBUG | D | NONE | CrashReporter: sentry-options to set crashpad handler successful |
2025-11-19 15:02:56.735 | 00828 |   ERROR | D | NONE | File or folder does not exist: C:\Users\User\AppData\Local\Citrix\AGEE\.sentry-native |
2025-11-19 15:02:56.736 | 00828 |   ERROR | D | NONE | Get file attributes -- Error (2) The system cannot find the file specified.

Environment

Windows 10/11

SEP: 14.3 RU9

Resolution

Please contact the Citrix support.

Additional Information

Ref: https://docs.citrix.com/en-us/citrix-secure-access/troubleshooting-failures-citrix-secure-access-client-for-windows