---
title: Troubleshooting
description: The following table lists some potential problems and resolutions you might encounter with the PingAccess agent for SUSE Linux Enterprise Server (SLES).
component: pingaccess
version: 9.0
page_id: pingaccess:agents_and_integrations:pa_apache_sles_troubleshooting
canonical_url: https://docs.pingidentity.com/pingaccess/9.0/agents_and_integrations/pa_apache_sles_troubleshooting.html
revdate: February 6, 2023
---

# Troubleshooting

The following table lists some potential problems and resolutions you might encounter with the PingAccess agent for SUSE Linux Enterprise Server (SLES).

| Issue                                                                                       | Resolution                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |
| ------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| Agent receives an unknown protocol error when attempting to contact the administrative node | This can indicate that the operating system is using sha1 for encryption. This protocol is no longer supported by default in PingAccess.We recommend switching to SHA-256. If you cannot switch to SHA-256, you can re-enable SHA-1:1) Open the `run.properties` file.

2) Add TLSv1 to the protocol list.

   ```
   tls.default.protocols=TLSv1, TLSv1.1, TLSv1.2, TLSv1.3
   ```

3) Add the SHA entries to the cipher suites list.

   ```
   tls.default.cipherSuites = TLS_CHACHA20_POLY1305_SHA256,\
                              TLS_AES_256_GCM_SHA384,\
                              TLS_AES_128_GCM_SHA256,\
                              TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,\
                              TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,\
                              TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256,\
                              TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256,\
                              TLS_DHE_RSA_WITH_AES_128_GCM_SHA256,\
                              TLS_EMPTY_RENEGOTIATION_INFO_SCSV, \
                              TLS_RSA_WITH_AES_128_CBC_SHA, \
                              TLS_DHE_RSA_WITH_AES_128_CBC_SHA, \
                              TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA, \
                              TLS_ECDH_RSA_WITH_AES_128_CBC_SHA, \
                              TLS_ECDH_ECDSA_WITH_AES_128_CBC_SHA
   ``` |