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OSX Slow AD Login

Alex Keller -

Enable Directory Service logging: https://support.apple.com/en-us/HT202242

Try changing the default timeout of 90 to a shorter interval like 20 or 30:
/usr/libexec/PlistBuddy -c "Set \"LDAP Connection\ Timeout\" 20" /Library/Preferences/DirectoryService/ActiveDirectory.plist

Clearing the cache:

In Single User mode:

/sbin/mount -uw /
rm -rf /System/Library/Caches/*
rm /private/var/db/BootCache.playlist

Then from there terminal command:

sudo nvram boot-args="-x”
to return to a normal startup:
sudo nvram boot-args=“"

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