Knowledge Base


Question / Problem

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

Answer / Solution

This issue was introduced with update KB4019472 for Windows 10 Version 1607 (Anniversary Update) and Windows Server 2016 and KB4016871 for Windows 10 Version 1703 (Creators Update). Please note, that newer cumulative updates like Windows 10 version 1709 would also contain this update.
A full list of cumulative updates which contain or replace KB4019472 can be found in the Windows Update Catalog in the 'Details' tab, under
For KB4016871, please see

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. Customers with valid maintenance can download the latest version of TreeSize, which is compatible with Windows 10 in your customer area at:

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