Running Windows scripts in x64 environments continuously can cause them to become very delayed or stop working in general.
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Running Windows scripts in x64 environments can result in the scripts taking extremely long or not working at all. The problem is due to a memory leak in LSASS.exe and is confirmed by this Microsoft article .
Go to this Microsoft article , and download and install the hotfix. This will help alleviate some of the memory leakage coming from LSASS.exe.