Quick overview:
As soon as you run dozens of applications at the same time, you will notice that after a certain number of open windows, Windows no longer opens anything. For example, if you load 50-60 instances of Internet Explorer, Windows reaches its internal limit for applications and displays the next instances completely garbled or not at all. This internal limit is also called the desktop heap.
Desktop heap restrictions
Each application and each window use a specific desktop heap in which they store menus, variables, fonts, printer drivers or sub-windows. If you want to increase the desktop heap in favor of the simultaneously running programs, you must perform the following steps:
1. Click in succession on Start/Execute and enter regedit in order to Registration editor to open.
2. Expand the HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\Session Manager\SubSystems\Windows and double-click on the long %SystemRoot%\system32\csrss.exe ObjectDirectory=\Windows.... value. Now move the cursor to the center and change the SharedSection=1024,3072,512 Value according to SharedSection=1024,5120,512. The middle number determines the size of the desktop heap in KB: So instead of 3 MB, you are now using 5 MB of desktop heap for applications!
To apply the changes, you must restart your computer! From now on, Windows should no longer run out of breath so quickly.
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