Both Domino 12.0.1 and IF1 contain bug "The caller's SemWait timeout expired."

Hi

Both Domino 12.0.1 and IF1 (HF11) contain bug "The caller's SemWait timeout expired."

You can see this error in Domino logs or if you configure a corresponding Probe in admin4.nsf (Probe Type: Database, Subtype: Error Monitoring).

There are different consequenses of this problem:

1. sometimes replication does not work properly
2. sometimes router can't send the email
3. ...I think there could be more issues, but the two first I expirienced myself...

The errors in log.nsf / console.log may look like:

20-01-2022 09:01:58 The DAOS catalog cannot be updated.: The caller's SemWait timeout expired.
20-01-2022 09:01:58 Router: Agent message: Notes error: The caller's SemWait timeout expired. 

The errors in ddm.nsf may look like:

Database object write error: E:\Data\mail\sxxxxt.nsf: The caller's SemWait timeout expired.

The only solution is to request another hotfix from IBM HCL (HF24) which includes IF1(HF11) + the fix for this problem (see DCKTCARNVR).