‘Time Machine couldn't back up to "ArcherA20.local"’
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Hi there,
Just set up my new TP-Link AC4000 (Archer A20).
(In case it matters, It is set up as an access point for an EdgeRouter X which is on a 1Gig fiber connection.)
I was easily able to use the TP-Link control panel to add a USB storage drive, enable Time Machine, and designate the correct disk partition for backups ("BackupTM").
In my macOS Time Machine preferences (macOS Catalina) the BackupTM was visible and I was able to add it as a backup disk.
However when I try to actually complete a backup, it says "Looking for backup disk…" for a minute or two, and then says "Backup Failed. Time Machine couldn't back up to "Archer A20.local"."
Clicking the "Details" button on the error message adds "Time Machine couldn't complete the backup. The backup disk image could not be created."
The Archer A20 volume is visible as a device on the network throughout.
Anyone have any insight as to what could be preventing Time Machine from finding the disk to complete the backup, even though it is able to find it to add it as a Time Machine disk in the first place?
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Were you on Big Sur?
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@anildash FYI just got and set up an AX11000 and was getting the Time Machine problems described here. (A) thanks everyone for figuring this out. (B) I was able ot fix the problem just by reformatting the drive to Mac extended journaled, but did not have to make the bakup encrypted.
Of course, if you want encrypted...
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It's such a pain.
Never had problem in over 5 years with my old router. But since it was working well I think I'll just return the Tp-link. I wanted to have more range than my old airport extreme but finally there is not so much difference.
Anyways, finally I did make my first computer connect to time machine, (mba on Big Sur),
but the second can't backup to it.
I always get the "can't backup on time machine" error message.
The second computer is a mbp on Mojave (10.14).
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