NOTE FROM ADMIN:

If you have this issue, please add your post below instead of creating duplicate issues!

First try this, it disables polling.

client.SocketPollInterval = 0;

And try this, it reduces the polling interval to ensure that the connection does not time-out.

client.SocketPollInterval = 1000;

Thanks.

Commonly occurs in:

• GetListing()
• DeleteDirectory()

For all the long running methods like UploadFileInternal and DowloadFileInternal and the above, we need to ensure that we poll the server to ensure its still connected. Could this be a fix to the "forcibly closed" error that we commonly receive?