Error 100001 installing DoD certs on Mac
macosError 100001
Symptoms
Adding a DoD cert to the keychain fails with 100001.
Likely cause
Corrupted login keychain.
Fix
1. Run Disk Utility > First Aid.
2. Finder > Go > hold Option > select Library > drag Keychains folder to the desktop.
3. Restart the Mac and re-enter your Apple ID / passwords when prompted.
4. Reinstall the DoD certs.
5. Once everything works, move the desktop Keychains folder to the Trash.
Sourced from militarycac.com. Rewritten for clarity.
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