https://bugs.winehq.org/show_bug.cgi?id=53697
--- Comment #37 from jhu543369@gmail.com --- I updated Windows, deleted the ProgramData\battle.net folder and the launched Battle.net again in my Win 10 drive (not a VM), and the certificate files continued to flash in the data\cache folder. In battle.net, I was able to download and apply updates for PTR, WoW Classic, WoW WotLK and WoW Shadowlands (all quite of date, WotLK I added from a download from last weeked needing an update) all while switching the battle.net launcher to beta mode. While it was not the quickest, and took ages to process, all tasks completed successfully while the cert files flashed. I don't think it is the cert/ospc files causing the problem. It still seems that a call made by agent.exe is not being handled in Wine, and I don't have the tools to see what is being called.