File Based Write Filter (FBWF) Issues
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* When FBWF runs in dynamic mode, it allocates memory from paged pool. The system sets a maximum value which is typically around 170MB. If the FBWF threshold is set to a value higher than that which Windows has set for the Paged Pool maximum (e.g. setting a 256MB FBWF threshold when the maximum Paged Pool size is 170MB), then the Paged Pool maximum will be obtained which in turn can cause instability issues with Windows and failure of file/folder copy/move operations to the protected volume. As a workaround, you can add the following value to the registry key to increase the maximum pool size HKLM\SYSTEM\CurrentControlSet\Control\Session Manager\Memory Management. Set this value to a value in bytes to FBWF threshold size. For example for a threshold size of 300MB set the registry key value to (300*1024*1024 which results in) 314572800. (registry key "pagedpoolsize")