The version store for this instance (%1) has reached its maximum size of %2Mb. It is likely that a long-running transaction ...

Exchange Server 2016

The version store for this instance (%1) has reached its maximum size of %2Mb. It is likely that a long-running transaction is preventing cleanup of the version store and causing it to build up in size. Updates will be rejected until the long-running transaction has been completely committed or rolled back.
Possible long-running transaction:
	SessionId: %3
	Session-context: %4
	Session-context ThreadId: %5
	Cleanup: %6
	Session-trace:
%7

The version of {5} installed on server {2} may cause messages to public folders to queue before the hierarchy can replicate. ... The version of {5} installed on server {2} may cause the Inetinfo process to use 100% of CPU when Active Directory queries ... The version store for this instance (%1) cannot grow because it is receiving Out-Of-Memory errors from the OS. It is likely ... The version store for this instance (%1) has a long-running transaction that exceeds the maximum transaction size. Current ... The version store for this instance (%1) has reached its maximum size of %2Mb. It is likely that a long-running transaction ... The version store for this instance (%4) cannot grow because it is receiving Out-Of-Memory errors from the OS. It is likely ... The version store for this instance (%4) has a long-running transaction that exceeds the maximum transaction size. Current ... The version store for this instance (%4) has reached its maximum size of %5Mb. It is likely that a long-running transaction ... The virtual directory "{0}" allows Basic authentication but doesn't require an SSL-encrypted connection. This means that ...