Windows Client fails to image backup

I have problem that i have no clue how to solve

Server : UrBackup 2.5.33 running on proxmox

Client : Urbackup 2.5.25 on Windows 10 Pro 22H2

Problem :

I have 3 device connect to Urbackup server, 2 Laptop dan 1 PC

i use the same method for all my device which is get the client from webGUI so the setting for all of them is same.

My PC and 1 Laptop manage to image backup to server without no problem

but on my other laptop it always fails to complete,

when i run manual full file backup it can run smoothly without issue,

but every time i try full image backup it start to fails,

first it can run the SYSVOL backup fine and start to backup C: , but after a while that the transfer speed decreare to 0 and it cannot continue again, it show on server as the client is offline but in client it says “ Idle” with Internet connection status : Connected to internet server.

the backup percentage when the problem start to happen is random so sometime is happen on 6% and other happen on 40%.

In server view, the backup process is just freeze with no progress because the server indicate the client is offline.

after i stop the backup process by pressing stop button, the the client start to show online again in the server.

Logs :

Level Time Message
Info 08/30/25 23:47 Starting unscheduled full image backup of volume “C:”…
Info 08/30/25 23:47 Basing image backup on last incremental or full image backup
Warnings 08/30/25 23:47 Error retrieving last image backup. Doing full image backup instead.
Errors 08/31/25 00:11 Server admin stopped backup. (2)
Info 08/31/25 00:11 Transferred 7.12082 GB - Average speed: 42.5048 MBit/s
Info 08/31/25 00:11 (Before compression: 13.2296 GB ratio: 1.85788)
Info 08/31/25 00:11 Time taken for backing up client Edo_laptop: 24m 44s
Errors 08/31/25 00:11 Backup failed

Server side:

Client Side:

Please i need advice to solve my problem..Thanks