Fix Memory Usage by File Based Write Filter Reached a Critical Warning Level

Memory Usage by File Based Write Filter Reached a Critical Warning Level notification followed by automatic reboot is due to the Cache Threshold Size having been reached.  RAM for FBWF Cache Usage is set to 128 MB for 32 Bit systems and 256 MB for 64 Bit systems.

By Default, Low Memory Message 1 is set to 70 Percent and will show the Green Lock icon within a Yellow Circle when memory usage by file based write filter has reached that threshold (70 Percent of Threshold Size).

By Default, Low Memory Message 2 is set to 95 Percent and will show the Green Lock icon within a Red Circle when memory usage by file based write filter has reached that threshold (95 Percent of Threshold Size).  At that point the system will reboot in 120 seconds.

Memory Usage by File Based Write Filter Reached a Critical Warning Level notification will usually appear on systems that have installed applications locally other than the very basic clients used to connect to a virtual environment.

In our case, the HP T620 thin client was displaying the Memory Usage by File Based Write Filter Reached a Critical Warning Level notification after installing several applications locally such as printer drivers for locally installed printers, Adobe Acrobat Pro, Symantec Endpoint Protection client, Teamviewer and updating Internet Explorer to the latest version.  The issue was promptly resolved by increasing the RAM for FBWF Cache Usage (MB) from the default threshold size of 128 MB to 256 MB on a 32 Bit system.

As a best practice, you don’t want to install these type of applications on a thin client to begin with.

 

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