SU12 Killed my MSFS... Stuck at decompressing

You could also “Submit a Request” for Zendesk support from the “Support” tab at the top of the page.

Well, yes… Already done that. Support responds, all generic solutions which I already tried. Really don’t understand how, but after two+ years of using MSFS, this time around Asobo with SU12 managed to somehow “update” me out

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Finally this ordeal got resolved.
None of the proposed by other users solutions such as Netlimiter 20mbp/s, AV off, VPN region change, deleting fspackXXX files, exiting / relaunching installer etc., etc. worked.

By my deepest surprise (and relief) after more than 20 days trial and errors, the one thing that worked was ASUS ROG Strix Z690 MB BIOS and chipsed/LAN drivers update. As soon as I did that, MSFS installed and updated from scratch at max download speed in just few hours. Go figure…

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You just never know, glad to hear you found the solution.
Good Flights!!