I have changed my service admin account password.
Setup Exchange server is hybrid.
After password change, Service account is lock out immediately after account is unlocked…
Event ID : 4740
TargetUserName : My service account
TargetDomainName : Random MS servers : VI1P195MB0141, VI1P195MB0655, VI1P195MB0463, PR3P195MB1008, VI1P195MB0256, AM9P195MB0919
Migration point run under different account. But hybrid was setup with my service account. Exchnage server is 2013.