Why Does Wuauclt.exe Crash

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When an update fails to install, gets stuck downloading, or enters an installation loop, the wuauclt.exe process can malfunction. This often results in the process consuming an excessive amount of memory or CPU time, sometimes over 2GB of RAM or 90-100% of the CPU, as it repeatedly tries to resolve the stalled task. A user on Microsoft Q&A confirmed that after installing a pending update, wuauclt.exe stopped consuming their RAM.