@Numa09
I had the same problem with a TP-Link switch. The model was a TL-SG2428P, and the FOG client would get stuck at:

“Running post init scripts…”

There were no error messages on the server, and the server firewall was disabled.

After seeing your comment, I disabled the DoS protection feature on the switch, and FOG started working normally.

Thank you, man!

UPDATE 07/17/2026

After some experimentation and examining the fogftp.class.php file, I found that FOG calls ftp_rename to move files from the /image/dev/<mac_host> folder to the /image/<image_name> folder.

Finally, it helped me to connect with a regular ftp client (WinSCP) and try to move the folders manually. This is how I found out that the problem was in the permissions set on the folders.

So I found out that from my original version 1.5.10.10 to the current 1.5.10.1903 there was a change in the file

/lib/reg-task/taskqueue.class.php

in the private function _moveUpload() method it was previously

->chmod(0777, $dest) and now it is ->chmod(0775, $dest)

That (maybe) could be the reason why it stopped working for me. Thanks to this post https://forums.fogproject.org/post/156271

chown -R fog:users /volume1/images/ #set inheritance to the dev folder chmod g+s /volume1/images/dev/

I connected to the NAS with ssh and fixed the permissions over the folders. Now it’s working fine again.

@Tom-Elliott
Hi Tom,
We’re on school holidays in Austria at the moment – I’m not at school right now. At the end of August, I’ll have to install the new image on all the pupils’ PCs. Once that’s done, I’ll be able to start trying things out again. Have a lovely summer, Alexander

@Tom-Elliott When searching for a solution I recall seeing a related post on GitHub but that was not me. Today I created a new VM that was 70GB with 2GB EFI partition and after sysprep and it yielded the similar resize error during capture.

I then tried Windows 11 25H2 June 2026 Build 26200.8655 with 60GB VM and it generated the resize error. 25H2 with 60GB VM and 2GB EFI also generated the resize error after sysprep during capture.

The AI suggested defrag C : /X

I ran the defrag before sysprep and capture was succesful.

The pre optimization total fragmentation was 22% and post defragmentation it was also 22%

To my understanding the /X flag consolidates free space. How was this the solution to my issue?

Per the FOG Project wiki I found that defrag is recommended before sysprep:

"…
Before Running Sysprep
Other steps to consider are:

Run Chkdsk /f /p prior to imaging
Defrag the drive
Make sure 2gb of disk space is free or the NTFSresize will fail
Make sure the FOG service is installed and properly configured
Update your hostnamechange.dll file
…
"
https://wiki.fogproject.org/wiki/index.php/Client_Setup