When running Windows Update, the operating system can provision too much memory to Windows Update. This may cause the kernel to reduce to 0 available memory. With no available memory, Endpoint Encryption aborts the decryption process. From this point, Windows will be unable to read the correct Registry data. This version forces the kernel to re-allocate memory to Full Disk Encryption in high-pressure situations. With sufficient memory, Endpoint Encryption no longer causes Registry issues, so Windows Update continues to function properly.

To prevent this issue, it is strongly advised to upgrade the TMFDE agent with the following:

• TMFDE 5.0 agents to at least build 5.0 patch 2 build 5.0.0.3777
• TMFDE 3.0.12/3.1.3 agents to at least build 3.1.3.380

To recover a corrupted registry database, backup all user data then do one of the following:

1. Re-install Windows.

2. Or follow these steps:

   1. Upgrade the TMFDE client.
   2. Submit a support case to request for a copy of a special Windows 7 setup CD according your FDE client version.
   3. Boot to the Windows ISO.
   4. Perform an In-Place Upgrade. You may refer to this Microsoft knowledge base article MS KB 2255099
   5. After the upgrade is finished, reboot the computer.
   6. Verify if Windows Update works.