Sync mirror has suddenly stopped working

[bhague]

Hi
I am new to this forum
I have been using FreeFileSync for some time with success, mirror syncing my networked harddrive Brennan B2 to my Netgear ReadyNAS, and am currently using version 11.13 {Donation edition] on one PC and the standard free 11.13 version on my laptop.
In the last week, after a change of modem router, the program has stopped, unable to find the source folder, whether named or by IP address.
Both addresses can be seen in the Win10 64 bit network page of File Explorer, and the browse function can also find them. But on clicking the Sync (Mirror) button, there is a Timeout after 20 seconds. When I cancel and try again, I get a Cannot read file attributes of "\\192.168.1.102\music". ERROR_BAD_NETPATH: The network path was not found. [GetFileAttributes] message.
I have not changed anything else!
Advice welcomed.

[DK_255]

Maybe the ip addresses have change from one router to the other one, you should try changing the old addresses for the new ones.

[bhague]

I have done that already, thanks DK_255.

[bhague]

Hello all
I think I have discovered the problem, at least the cause of the problem:
The DHCP server has reassigned the IP of the Brennan B2 to a different IP address, despite it being "reserved".
Having rebooted the Modem/Router, the reserved IP has been correctly assigned to the Brennan B2 and the Synchronisation works a treat once again!
Now to find out why the reservation did not work correctly, but it is clearly not a problem with the FFS software!

[xCSxXenon]

Did you reserve the IP on the machine our in the router? If you reserved it in the router, then obviously you would have needed to do the same on the new router, so that doesn't sound like the issue. You must have set it statically on the device, and then something else took that IP before the host could. You should reserve IPs in your DHCP server using MAC addresses