Logging into proxmox backup client repository gives permission check failed

denture8334

New Member
Jan 27, 2026
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I'm trying to log in to my repository with the user that has permission to the datastore of my host machine. I'm using:

proxmox-backup-client login --repository user@PBS@ip-vm:datastorename
Which in return gives the error: Error: permission check failed & sometimes gives this error when logging in with root: Error: authentication failed - ticket with bad timestamp: invalid digit found in string
Initially i had an option to give in a password in the beginning but i must have entered a wrong one and now the ticket seems to have saved that invalid password.

On the Backup Client Usage doc page, it states "To remove the ticket, issue a logout", however this does not seem to remove the ticket as i do not get any prompt to enter a password after trying to login again.
 
What's your proxmox-backup-client version?

Edit: Also check the contents of /run/user/<userid>/tickets for the user as which the command is executed. That is where tickets are stored.
 
Last edited:
What's your proxmox-backup-client version?

Edit: Also check the contents of /run/user/<userid>/tickets for the user as which the command is executed. That is where tickets are stored.
Hi Chris, so i tried again the next morning and i managed to get a prompt to enter a password, now entered the correct one. Seems like the incorrect ticket expired overnight. I have not checked the contents of /run/user/<userid>/tickets initially so it could be that removing that ticket file would have solved it at that moment, but i can't seem to replicate the issue now that it works again.

My proxmox backup client version is 4.1.1

But regardless, thank you for the reply :)