Unable to decrypt messages from matrix.org

[verymilan]

Since a couple of days, it appears that all users on my homeserver tchncs.de are unable to decrypt messages from matrix.org. Some reported a delay of 1-2 days.

** Unable to decrypt: The sender's device has not sent us the keys for this message. **

I have switched the room with my fallback account on the matrix.org-side to encryption and am unable to read my messages on either side (while for a short moment, it worked on the matrix.org side) since more than two days. My current loglevel is warning - i have not found any entry with the eventids or roomids for this testroom.

I am using this repository for the report because it ... seems to be the usual and expected place? I know there are various similar issues in this topic already, but in my case only one server but presumably all users are affected, which is kind of a big problem.

As suggested by @richvdh, i have asked my users to report this from their clients, some already did.

Most recent event-ids in my testroom: $1606253776323600JnZDO:matrix.org and $16062537373140YZSqA:tchncs.de

[verymilan]

reported this to the synapse repo now