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We're a community of IT professionals committed to sharing knowledge. Our experts volunteer their time to help other people in the technology industry learn and succeed. Plans and Pricing. Contact Us. Certified Expert Program. Credly Partnership. Udemy Partnership. Privacy Policy. This article helps fix an "Out of Memory" error that occurs when you open many application windows in Windows.
After you open many application windows in Windows, you may be unable to open any additional windows. A window may open sometimes, but it won't contain the expected components. Additionally, you receive an error message that resembles:. This problem occurs because of the desktop heap limitation. When you close some windows, and then try to open other windows, these windows may open.
However, this method doesn't affect the desktop heap limitation. This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully.
For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, see How to back up and restore the registry in Windows.
Click Start , type regedit in the Start Search box, and then select regedit. If you are prompted for an administrator password or for confirmation, type your password, or click Continue. In the Value data section of the Edit String dialog box, locate the SharedSection entry, and then increase the second value and the third value for this entry. By default, the Windows registry entry contains the following data in an xbased version of Windows 7 Service Pack 1. Memory allocations are dynamic in later operating systems.
There's no limitation for memory allocation. However, if you allocate too much memory to the desktop heap, negative performance may occur.
It's why we don't recommend that you set a value that is over The desktop heap size isn't affected by the physical RAM on the computer.
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