Knowledge Base


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Is TreeSize able to show file permissions, and not just ownership?

Yes. This web page provides an overview on the permissions reporting capabilities of TreeSize:

Right clicking on the header of the Details list will show a popup menu that allows to choose additional columns showing the permissions:
If you export a scan to Excel, these columns will be included as well. (To get a full report in Excel, you need to check-mark the option "Tools > Options > Export > Excel > Export the full directory branch" and optionally "Include single files in export")

Excel Auto-Filter is a good tool to filter the exported lists for specific users or groups. Our product SpaceObServer will get better reporting capabilities with the upcoming V6, for details please see:

How do I search for invalid file names using Treesize?

Got to the Treesize File Search, enable only the "Custom Search", and define an include filter on the right for "file and Folder Name" of type "Regular Expression" and one of these patterns:

 [^[:print:]]  if you want to treat al non-ASCI characters as invalid (which would e.g. also treat German umlauts as invalid)

 [^\P{C}]  if you want to treat all non-printable Unicode characters as invalid
It can also make sense to search for files containing the non-breakable space (Unicode NOBR U+00A0). To find them, use the pattern [\xA0].

TreeSize does not follow symbolic links pointing to another drive, it shows 0 KB for this link. Can this be changed?

You can change the behavior by check-marking the option "Tools > Options > Scan > General > Follow Mountpoints and external symbolic links"

I want to analyze the size and growth (via xml report compare) of a specific set of folders. Is it possible to save a selection of folders to scan on the same drive? There are like 80 folders out of 120 that need scanning.

You currently cannot save a set of subfolders to an XML file. If the unwanted folders all match a certain pattern, you can define an exclude filter in the "Options" of TreeSize.

To monitor the size and growth of certain folders continuously, we would like to recommend our product SpaceObServer.

The 64bit version of TreeSize Professional crashes immediately after start after installing Windows 10 Update KB4019472.

This issue was introduced with update KB4019472 for Windows 10 and Windows Server 2016. Please note, that newer updates like KB4022715 may kumulate this update.

The error only occurs with the 64bit version of TreeSize, not affected is the 32bit version of TreeSize.

Since V6.3.6 TreeSize is compatible with Windows 10 and Server 2016 with update KB4019472. You can get your update in your customers area at:

Do not install Windows 10 Update KB4019472 if you intend to use an older version of TreeSize.

I was wondering if it was possible to have the "Check for Update" button disabled or removed from the Help menu.

The "Check for Update" button in the "Help" menu can be hidden in two ways:

Running TreeSize with special command line options

If you execute this command line after the installation, the "Check for Update" button will be no longer available:

TreeSize.exe /NOGUI /ShowCheckForUpdate False /SAVESETTINGS

Please add the full path to TreeSize.exe, e.g."

%programFiles%\Jam Software\TreeSize Professional\TreeSize.exe"

Deploying a configuration file

First you need to edit the XML-based configuration file of TreeSize. The configuration file is locted at the following path by default:

%APPDATA%\JAM Software\TreeSize Professional

(Ples note that %APPDATA% is an environment variable that will be resolved automatically by Windows if it is entered in the address bar of the Windows Explorer.) 

Before proceeding, please ensure TreeSize is closed.

In the folder above, you will find a file called "GlobalOptions.XML" Please open the file with a suitable text editor (Notepad, Notepad++,...) and search for the following line: <ShowCheckForUpdate>True</ShowCheckForUpdate>

Please set the value "True" to "False". If you start TreeSize again, you will notice that the "Check for Update" button is no longer available.


Is TreeSize available for Android?

There in no TreeSize App for Android. But you can scan your mobile phone using the TreeSize Windows desktop app, if your mobile device is connected to your PC via USB and is unlocked. For more details on this suubject please visit: http://

Are there any known problems when using TreeSize Professional on a Citrix server?

TreeSize Professional runs in a Citrix environment, there are currently no known problems. Please note that you need one license for each Citrix client in which TreeSize Professional can be started.

How do i know that the scan of a path is finished?

If the small blue progress bar left of the root node disappears, the scan is finished. Duriong a scan the small hourglass on top of the folders indicate that the folder is not fully scanned.

What ports will need to be opened in the firewall to allow scanning a remote server?  

Typically our products use the same ports and protocols as Windows Explorer. Port 445 is needed for SMB/CIFS communication. Ports 137-139 are needed for NetBios/Name resolution only . Without it you will have to access machines by IP address opposed to NetBIOS name. Example \\\share_name opposed to \\my_file_server\share_name. So port 445 is sufficient if you can work with IP addresses only.

I am a registered user. How do I download upgrades if I want to run the latest version?

In our customer 's area you can download the full version of your registered software, get the installation password, update your personal data or purchase updates to the next major version for a reduced price.

The exported files generated through a scheduled Treesize scan differ from those I generated in the user interface. How can I make sure the export have the same format?

The reason for this is usually that the task is running under a different user account than the TreeSize user interface. One possibility would be that either is running as Administrator while the other is not. 

You can ensure that the task uses the same settings for all users by exporting your current options from the UI via "Home" > "Options" > "Export" and using that file for your task as well. You can then use the TreeSize task scheduler dialog to modify an existing task and select "Use saved options" in combination with your exported options file.You can also manually modify the task via the Windows Task Scheduler and append the command line argument /OPTIONS <pathToOptionsFile>.