[eichelbe]

I did not change any code related to the companion app connection, so I'm not sure why you are suddenly seeing the problem again. I suppose it was just a fluke that the error went away for you then. This is not a problem I can rarely reproduce, so it's very difficult to do any analysis on it.

Mike

Thanks for letting me know and I fully understand that this is not easy to fix. May be our FritzBox has updated in the mean time... indeed, it could help if you would be within our network or you could go crazy with it's behavior. MSP is sometimes behaving strange dependent on the position of the devices in the room, e.g., companion connections get lost or it shows me the "server" for synchronization multiple times and none is working, while on other days it works better (may be also dependent on moon phases ) - for some cases I can attribute it to the room, the location of the devices, the walls in between. Now I had the backup problem three times in sequence in direct line of sight to the WiFi router and the companion always ends at 99% with "The backup has failed. There may be problems with the tablet backing up the files or a connectivity problem", while the tablet ends at "Backup successfully completed." (translated from German display language). I could imagine that other programs boldy do a reconnect trying to recover at that point, which, of course, is more effort/logic if you did not alreay built this into MSP. I believe that one fine day it will work again (different moon phase).