"Unable to restore session" error after upgrading from ancient Element Desktop release #27449
Labels
A-E2EE
A-Element-R
Issues affecting the port of Element's crypto layer to Rust
O-Uncommon
Most users are unlikely to come across this or unexpected workflow
S-Critical
Prevents work, causes data loss and/or has no workaround
T-Defect
If you were previously using an Element Desktop release from before December 2021 (specifically before #20160), then upgrade directly to a modern version using Rust crypto, you will get an "Unable to restore session" modal.
[The problem is that the format of the libolm account pickle changed in libolm 3.2.7, and the Rust crypto library only supports the newer format.]
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