synchronizing folder failed again, tried repair but does not fix the problem

has been getting this error every few minutes for the whole day. Really annoying. I already tried repairing but does not work.

anyone have solution for this? it is really annoying me as the error pops up every few minutes.


Can you please tell me what kind folder is the one that is blacked out? Calendar/tasks/mail folder? It will help me in identifying the problem.


strangely the issue resolved by itself. The error stopped poppiing up after few days. I am not sure what happened.

BTW it happened to the mail folder.