Ohh, I have completely installed Windows 8.1 Pro in the last two days and I still get the same error!
I don't know what to do.
Please help, anyone.
Thank you for the post and I apologize for the delay.
Is the Windows firewall OFF or rules configured for ports 5003 and 443?
Does the upload work from FileMaker Pro 13 installed on the FileMaker Server?
If not, please review the following knowledge base article for alternative methods of uploading files to FileMaker Server 13:
Please keep me updated with any progress.
Thanks a lot for your suggestion:
After opening and closing a lot of different ports (443, 5003, 16000, 16001; now, they're all open) -- it finally works.
Do you know which ports are needed for upload and for server management? Then, I can close the other ports again. I believe 16000 is for server management? But what is 16001 used for? When I tried to open the port 16001 on the Windows machine nothing happened; the port stays closed. Strange.
But anyway, it works now. Thank you,