Authentication rejected on mac Team viewer 9.0.24337

[Miyang]

Dear Colleagues,
I am running team viewer 9.0.24337.
Every thing was smooth but one day when I tried to connect my remote PC I got the message of Authentication rejected. I wonder that I did not make any change on either end why I am getting this message? Can anyone help me in this regard?
Now I can not connect my two old remote PCs where bott are giving same message "Authentication rejected" I can see both are online in my account.

I checked with another new remote computer its working but not with my previous two old remote PCs

Thanks in advance!!!

Dr.Mi

[Admin]

could be an issue of outdated teamviewer software on the old remote systems.
check and update teamviewer see if that resolves it.

[Miyang]

Dear Sir,
Thanks for ur suggestion. I will check if update is possible on other end.
Because of updating problems I specifically using same versions on both computers and still it has issue…its strange!