I wish there was a CLI command that could restart TFTP services on these switches. Very strange but the reboot does the trick for these switches. All other TFTP files needed to be transferred (config file types, vlan.dat etc.) will work just fine at all time. bin files only) until the switch is rebooted. bin file just fine, but then it stops receiving it after a while and then it refuses to work (for. The irony is that the switch starts uploading the. Now, if you want the server to appear in the Windows System Tray, click the ‘ Add TFTP Server to Windows System Tray ’. Once it loads up, click on File and then select Configure. I'm afraid this is a bug in the cisco software/services or the way the switch is reading/uploading the software into the flash memory. First of all, run the SolarWinds TFTP Server utility by going to the Start Menu and searching for TFTP Server. Once the 3650 is rebooted, the upload will work just fine and then will complete without any problems (and without restarting the PC or TFTP services). But the issue is still on the switch side. This proves not to be a TFTP communication issue on ether the workstation nor the switch. bin file, try copying the running-config to the TFTP server and you will see that it works and it will never fail.

If you want test this while the switch refuses to upload the IOS XE. I discovered that the switches that stop receiving TFTP IOS XE, (bin file extension in particular), will not work after they fail (obviously) or if you retry the CLI command until the switch is rebooted.

Solarwinds tftp server