Which Types of Failures May Occur During the O&M?

ERROR_CLIENT_514

Code: C_514

The file transfer response time is too long. Please try again or contact the system administrator.

1. Check whether packet loss occurs on the network between the CBH system and the FTP server.
2. Log in to the FTP server and check whether files can be uploaded.
3. Check whether the native network restricts the size of the file to be uploaded.
4. Submit a service ticket to contact technical support.

ERROR_CLIENT_515

Code: C_515

An error occurs during O&M. Please try again or contact the system administrator.

1. Log in to the faulty host locally or try to log in to another host in the same network segment.
2. Check whether /etc/hosts.deny file blacklists the IP address of the CBH system. For details, see What Should I Do If a Login Error (Code: C_515) Occurs?
3. Check whether the IP address of the CBH system is blocked by network protocols between the CBH system and faulty host.
4. Submit a service ticket to contact technical support.

ERROR_CLIENT_519

Code: C_519

The managed host cannot be accessed because the resource is disconnected or unreachable. If the problem persists, contact the system administrator or check system logs.

1. Check whether the network connection between the CBH system and the managed host is normal.
2. Log in to the managed host locally and run the route -n command to check whether the CBH route is missing from the routing table.
3. Submit a service ticket to contact technical support.

   For details, see What Should I Do If a Login Error (Code: C_519) Occurs?

ERROR_CLIENT_520

Code: C_520

The managed host cannot be accessed because the RDP rejects the connection or an error occurs during waiting for response data. If the problem persists, contact the system administrator or check system logs.

1. Check whether the remote desktop is enabled on Windows host.
2. Log in to the managed host in local MSTSC mode and check whether the login is successful.
3. Submit a service ticket to contact technical support.

ERROR_CLIENT_521

Code: C_521

Connection conflict occurs due to login of other users. Please try again later.

1. Log in to the Windows host locally and run the gpedit.msc command to set the maximum number of connections and change the maximum number of enabled connections. Alternatively, disable the restriction that each user can have only one session.
2. Submit a service ticket to contact technical support.

ERROR_CLIENT_522

Code: C_522

The connection has been disconnected because the RDP session exceeds the time limit. To restore the connection, contact the system administrator or check the system settings.

1. Log in to the Windows host locally and run gpedit.msc command to set the time for the disconnected session.
2. Log in to the host in local MSTSC mode and check whether the RDP timeout error occurs.
3. Submit a service ticket to contact technical support.

ERROR_CLIENT_523

Code: C_523

The connection has been disconnected because the administrator has disconnected the connection, the account has been logged out, or the host login duration has reached the upper limit. To restore the connection, contact the system administrator or check system logs.

1. Check whether the RDP connection is forcibly disconnected by the administrator.
2. Check whether the system user is logged out by the server administrator.
3. Check whether the login duration exceeds the limit.

ERROR_CLIENT_769

Code: C_769

Login failed. The account username, password, or key is incorrect. Please try again.

1. Log in to the faulty host locally and check whether the managed host account username and password are correct.
2. Check whether two-factor authentication is enabled for the managed host.
3. Check whether the managed host rejects the login of user root.
4. Submit a service ticket to contact technical support.

   For details, see What Should I Do If a Login Error (Code: C_769) Occurs?

ERROR_CLIENT_771

Code: C_771

Contact the administrator to grant account access permission or check your system settings.

Check whether the remote login permission of the target account is enabled for the managed host.

ERROR_CLIENT_776

Code: C_776

• This error code is returned when the connection has been interrupted because the browser does not respond for a long time. Please check your network and try again.
• This error code is returned when the connection has been interrupted because the browser does not respond for a long time. Check the outbound access policy of the security group that the application server belongs and allow access to the CBH instance IP address over port 443.

Check the running status of the local browser. The Google Chrome browser is recommended.

ERROR_CLIENT_797

Code: C_797

The number of connections exceeds the upper limit. Close one or more connections and try again.

Log in to the Windows host locally and run the gpedit.msc command to set the maximum number of connections.

ERROR_TUNNEL_514

Code: T_514

The connection has been disconnected because the server does not respond for a long time. Please check your network and try again.

1. Check whether the network between the CBH system and the managed host is stable.
2. Check whether the network connection between the CBH system and the managed host is normal.
3. Submit a service ticket to contact technical support.

   For details, see What Should I Do If a Login Error (Code: T_514) Occurs?

ERROR_TUNNEL_520

Code: T_520

The proxy server of H5 server is rejecting the connection. Please check your network and try again.

1. Check whether the IP address or port number of the managed host are correct.
2. Check whether the guacd service is enabled on the managed host.
3. Check whether host guacd service can be accessed by the IP address of the CBH system.
4. Submit a service ticket to contact technical support.