Time Machine not working since Monterey update

[SandersJC1964]

Since updating my M1 MBA to Monterey, I am not able to create a Time Machine backup on my HP SSD USB 3.0 external hard drive. I've erased, repartitioned, formatted the drive multiple times, made sure the disk was in the correct format, It will go through the entire process of creating the backup, and throws no errors, however, the backup information will show no backups exist, and when I navigate to the drive in Finder it is empty. Interestingly, when I select the drive in the disk utility tool, it shows space has been used, but there are no visible files. I am wondering if this is related to the USB bug that's been recently reported. Any thoughts?

 

[EdwinG]

I have not seen this using network-based Time Machine?

Have you tried switching the formatting (Extended macOS versus APFS)?

You could also try forcing a backup from the Terminal.app by using

tmutil startbackup

 

[blueisharpersdog]

it works, make sure you turn of the encryption when you back up the old one.
It helps to boost the speed, yet make it doable

 

[Deschipper]

Restart your computer in safe mode.
Do your Time Machine backup
Restart your computer, Time Machine should resume working

 

[netnative]

Since updating my M1 MBA to Monterey, I am not able to create a Time Machine backup on my HP SSD USB 3.0 external hard drive. I've erased, repartitioned, formatted the drive multiple times, made sure the disk was in the correct format, It will go through the entire process of creating the backup, and throws no errors, however, the backup information will show no backups exist, and when I navigate to the drive in Finder it is empty. Interestingly, when I select the drive in the disk utility tool, it shows space has been used, but there are no visible files. I am wondering if this is related to the USB bug that's been recently reported. Any thoughts?

You are not alone. It seems that Apple broke Time Machine with Monterey. I encourage you to Google search “Time machine experiencing multiple issues on Monterey (my personal issue resolved)”. It is a thread in another forum.

 

[netnative]

Initial Time Machine Backup Failures Increasingly Being Reported by Mac Users | MacRumors https://www.macrumors.com/2021/12/08/time-machine-initial-backup-error/

 

[JSands1964]

Update: So after multiple factory resets, safe mode, different drive; still is not working. It’ll go through the whole process and then shows “None” next to the backup options. Guess I’ll wait to see if there’s an update.