private static EasyDAClient Create()
{
    EasyDAClient.LogEntry += EasyDAClientOnLogEntry;
    EasyDAClient.SharedParameters.TopicParameters.TopicRetrialDelay = 0;
 
    var opcClient = new EasyDAClient();
    ApplyOpcLabsLicense(opcClient);
 
    opcClient.InstanceParameters.EnableNativeClient = false;
    opcClient.InstanceParameters.EnableNetApiClient = true;
 
    opcClient.InstanceParameters.Mode.AllowAsynchronousMethod = false;
    opcClient.InstanceParameters.Mode.DesiredMethod = OpcLabs.EasyOpc.DataAccess.Engine.DAReadWriteMethod.Synchronous;
    opcClient.InstanceParameters.Timeouts.BrowseAccessPaths = int.MaxValue;
    opcClient.InstanceParameters.Timeouts.BrowseNodes = int.MaxValue;
    opcClient.InstanceParameters.Timeouts.BrowseProperties = int.MaxValue;
    opcClient.InstanceParameters.Timeouts.BrowseServers = int.MaxValue;
    opcClient.InstanceParameters.Timeouts.GetProperty = int.MaxValue;
    opcClient.InstanceParameters.Timeouts.ReadItem = int.MaxValue;
    opcClient.InstanceParameters.Timeouts.WriteItem = int.MaxValue;
 
    return opcClient;
}
 
private static void EasyDAClientOnLogEntry(object sender, LogEntryEventArgs args)
{
     //write to file
}

2025-01-20 13:58:33.5866|Information(1201): Licensing for EasyDAClient component started, license serial number *******, issuer name "*******", subject name "********".
2025-01-20 13:58:33.6786|Error(2): COM security initialization (process name "********", Id 20820) for requestor 'ComSecurityInitializingEasyDAClient' failed; the initialization object was: (Default).
CoInitializeSecurity failure (0x80010119): Security must be initialized before any interfaces are marshalled or unmarshalled. It cannot be changed once initialized.
+ This error (RPC_E_TOO_LATE) is not uncommon in hosted .NET applications. Depending on various factors, it might be possible to prevent it, or safely ignore it (if COM works as intended). Consult the product documentation.
+ Current thread name: "", from thread pool: yes, managed thread Id: 9, apartment state: MTA.

EasyDAClient.LogEntry += EasyDAClientOnLogEntry;

Write not completed. This error indicates that it could not be verified that the requested write operation was completed during the timeout period. It is possible that the write operation will actually succeed or fail, but later. Increase the timeout period if you want to obtain positive or negative indication of the operation outcome. Other reason for this error may be that under  heavy loads, topic request or response queue is overflowing. Check the event log for queue overflow errors (if event logging is supported by the product and enabled).
+ The client method called (or event/callback invoked) was 'WriteMultipleItemValues[4]'.