| Event Id | 64021 |
| Source | Windows File Protection |
| Description | The system file <drive:\path\filename> could not be copied into the DLL cache. The specific error code is 0x00000000 [The operation completed successfully.]. This file is necessary to maintain system stability. |
| Event Information | Different causes and and its solutions can found from following links to Microsoft documents. |
| Reference Links | Installation of HP 2000c Printer Causes Event ID 64021 for Windows File Protection Windows File Protection Logs an Event ID: 64021 When You Run the SFC Utility Windows File Protection Event ID 64021 When You Install Hotfix Service Pack 1 Installation Generates Windows File Protection Event Log Entry |
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