Imap does not work anymore

The only Mailaccount that is still working is an exchange-account. All IMAP-Accounts are not syncing anymore, neither gmail nor the ones from strato.

I got no new updates on eM, tho i changed the network from Lan to WIFI.

Issue is this apparantly:

—> System.ComponentModel.Win32Exception (0x80090304): Die lokale Sicherheitsautorität (LSA) ist nicht erreichbar.

any help would be nice!

Solved! Changed IMAP Port from 993 to 143