Can't login to Outlook app – Login window keeps returning - Microsoft Community


hello, 

since friday have been unable login outlook desktop app (os x). office 365 login window pops , have enter password. problem login window keeps returning on , on again. have changed password twice still not work. have no problem accessing sharepoint or mail using browser. 

if enter wrong password clear error message (wrong id or password). if enter correct password window says "loading" , disappears, returns again after 2 seconds.  

hi johan&jfl,

please firstly follow steps below delete keychains saved email account in outlook mac.
1. make sure have quitted outlook , other office apps. go keychain access

2. search "exchange" under login --> items , delete

3. search "office" , delete

4. search "adal" , delete everything 

5. launch outlook

6. activation prompt. if account added, see password prompt app , adal again. please 2-factor authentication if asked. , should able login.

if not work, try delete account , re-add it. before delete it, please files first avoid unexpected data loss.

regards,
yang



Office / Outlook / Mac / Office 365 for business



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