It appears from the notes at the @dhernandez link above like a fixed library is available here in 1.7.0 but is not yet in a Duplicati beta (and unfortunately beta releases are not done frequently). Possibly it could get in canary, however I’m still wondering if Mega provides any escape for new accounts on software that lacks v2 support. Even before canary, someone probably should grab the library, extract MegaApiClient.dll, and test with it in their Duplicati Program Files folder to see if it works and helps. After that, maybe a GitHub issue for an update similar to Update MegaApiClient to reduce CPU usage #3385. If you’d rather wait awhile, there’s another upgrade from the same author in the pipeline that might push past 1.7.0 when lib group releases it: