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Large Buildup of DLLs in TEMP Folder

In Windows 10 you may notice a large number of folders in the user's TEMP directory with random names such as FFEDFE46-CF72-48D9-98D3-638D6EBE7F25. Within those folders are a number of binary files:

    api-ms-win-base-util-l1-1-0.dll
    api-ms-win-core-com-l1-1-0.dll
    api-ms-win-core-comm-l1-1-0.dll
    api-ms-win-core-console-l1-1-0.dll
    api-ms-win-core-datetime-l1-1-0.dll
    api-ms-win-core-datetime-l1-1-1.dll
    api-ms-win-core-debug-l1-1-0.dll
    api-ms-win-core-debug-l1-1-1.dll
    api-ms-win-core-delayload-l1-1-0.dll
    api-ms-win-core-errorhandling-l1-1-0.dll
    api-ms-win-core-errorhandling-l1-1-1.dll
    api-ms-win-core-fibers-l1-1-0.dll
    api-ms-win-core-fibers-l1-1-1.dll
    api-ms-win-core-file-l1-1-0.dll
    api-ms-win-core-file-l1-2-0.dll
    api-ms-win-core-file-l1-2-1.dll
    api-ms-win-core-file-l2-1-0.dll
    api-ms-win-core-file-l2-1-1.dll
    api-ms-win-core-handle-l1-1-0.dll
    api-ms-win-core-heap-l1-1-0.dll
    api-ms-win-Core-Heap-Obsolete-L1-1-0.dll
    api-ms-win-core-interlocked-l1-1-0.dll
    api-ms-win-core-io-l1-1-0.dll
    api-ms-win-core-io-l1-1-1.dll
    api-ms-win-core-kernel32-legacy-l1-1-0.dll
    api-ms-win-core-kernel32-legacy-l1-1-1.dll
    api-ms-win-Core-Kernel32-Private-L1-1-0.dll
    api-ms-win-Core-Kernel32-Private-L1-1-1.dll
    api-ms-win-core-libraryloader-l1-1-0.dll
    api-ms-win-core-libraryloader-l1-1-1.dll
    api-ms-win-core-localization-l1-2-0.dll
    api-ms-win-core-localization-l1-2-1.dll
    api-ms-win-core-localization-obsolete-l1-2-0.dll
    api-ms-win-core-memory-l1-1-0.dll
    api-ms-win-core-memory-l1-1-1.dll
    api-ms-win-core-memory-l1-1-2.dll
    api-ms-win-core-namedpipe-l1-1-0.dll
    api-ms-win-core-privateprofile-l1-1-0.dll
    api-ms-win-core-privateprofile-l1-1-1.dll
    api-ms-win-core-processenvironment-l1-1-0.dll
    api-ms-win-core-processenvironment-l1-2-0.dll
    api-ms-win-core-processthreads-l1-1-0.dll
    api-ms-win-core-processthreads-l1-1-1.dll
    api-ms-win-core-processthreads-l1-1-2.dll
    api-ms-win-core-processtopology-obsolete-l1-1-0.dll
    api-ms-win-core-profile-l1-1-0.dll
    api-ms-win-core-realtime-l1-1-0.dll
    api-ms-win-core-registry-l1-1-0.dll
    api-ms-win-core-registry-l2-1-0.dll
    api-ms-win-core-rtlsupport-l1-1-0.dll
    api-ms-win-core-shlwapi-legacy-l1-1-0.dll
    api-ms-win-core-shlwapi-obsolete-l1-1-0.dll
    api-ms-win-core-shutdown-l1-1-0.dll
    api-ms-win-core-string-l1-1-0.dll
    api-ms-win-core-string-l2-1-0.dll
    api-ms-win-core-string-obsolete-l1-1-0.dll
    api-ms-win-core-stringansi-l1-1-0.dll
    api-ms-win-core-stringloader-l1-1-1.dll
    api-ms-win-core-synch-l1-1-0.dll
    api-ms-win-core-synch-l1-2-0.dll
    api-ms-win-core-sysinfo-l1-1-0.dll
    api-ms-win-core-sysinfo-l1-2-0.dll
    api-ms-win-core-sysinfo-l1-2-1.dll
    api-ms-win-core-threadpool-l1-2-0.dll
    api-ms-win-core-threadpool-legacy-l1-1-0.dll
    api-ms-win-core-threadpool-private-l1-1-0.dll
    api-ms-win-core-timezone-l1-1-0.dll
    api-ms-win-core-url-l1-1-0.dll
    api-ms-win-core-util-l1-1-0.dll
    api-ms-win-core-version-l1-1-0.dll
    api-ms-win-core-wow64-l1-1-0.dll
    api-ms-win-core-xstate-l1-1-0.dll
    api-ms-win-core-xstate-l2-1-0.dll
    api-ms-win-devices-config-L1-1-0.dll
    api-ms-win-devices-config-L1-1-1.dll
    api-ms-win-Eventing-ClassicProvider-L1-1-0.dll
    api-ms-win-eventing-consumer-l1-1-0.dll
    api-ms-win-Eventing-Controller-L1-1-0.dll
    api-ms-win-Eventing-Legacy-L1-1-0.dll
    api-ms-win-Eventing-Provider-L1-1-0.dll
    api-ms-win-EventLog-Legacy-L1-1-0.dll
    api-ms-win-security-base-l1-1-0.dll
    api-ms-win-security-cryptoapi-l1-1-0.dll
    api-ms-win-Security-Lsalookup-L2-1-0.dll
    api-ms-win-Security-Lsalookup-L2-1-1.dll
    api-ms-win-security-lsapolicy-l1-1-0.dll
    api-ms-win-security-provider-L1-1-0.dll
    api-ms-win-security-sddl-l1-1-0.dll
    api-ms-win-service-core-l1-1-0.dll
    api-ms-win-service-core-l1-1-1.dll
    api-ms-win-service-management-l1-1-0.dll
    api-ms-win-service-management-l2-1-0.dll
    api-ms-win-service-private-l1-1-0.dll
    api-ms-win-service-private-l1-1-1.dll
    api-ms-win-service-winsvc-l1-1-0.dll
    AppxProvider.dll
    AssocProvider.dll
    CbsProvider.dll
    CompatProvider.dll
    DismCore.dll
    DismCorePS.dll
    DismHost.exe
    DismProv.dll
    DmiProvider.dll
    FfuProvider.dll
    FolderProvider.dll
    GenericProvider.dll
    IBSProvider.dll
    ImagingProvider.dll
    IntlProvider.dll
    LogProvider.dll
    MsiProvider.dll
    OfflineSetupProvider.dll
    OSProvider.dll
    ProvProvider.dll
    SmiProvider.dll
    TransmogProvider.dll
    UnattendProvider.dll
    VhdProvider.dll
    WimProvider.dll
    en-US\AppxProvider.dll.mui
    en-US\AssocProvider.dll.mui
    en-US\CbsProvider.dll.mui
    en-US\CompatProvider.dll.mui
    en-US\DismCore.dll.mui
    en-US\DismProv.dll.mui
    en-US\DmiProvider.dll.mui
    en-US\FfuProvider.dll.mui
    en-US\FolderProvider.dll.mui
    en-US\GenericProvider.dll.mui
    en-US\IBSProvider.dll.mui
    en-US\ImagingProvider.dll.mui
    en-US\IntlProvider.dll.mui
    en-US\LogProvider.dll.mui
    en-US\MsiProvider.dll.mui
    en-US\OfflineSetupProvider.dll.mui
    en-US\OSProvider.dll.mui
    en-US\ProvProvider.dll.mui
    en-US\SmiProvider.dll.mui
    en-US\TransmogProvider.dll.mui
    en-US\UnattendProvider.dll.mui
    en-US\VhdProvider.dll.mui
    en-US\WimProvider.dll.mui

These files may be removed.

This may be caused by the Silent Cleanup task which does not run properly on some systems and does not clean up upon completion.

To disable the System Cleanup, open an elevated command prompt and enter:

schtasks /Change /TN "Microsoft\Windows\DiskCleanup\SilentCleanup" /Disable

This issue seems to occur mostly on Windows 10 systems upgraded from an earlier operating system.

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