Hi @Kevin,> Is it possible to uninstall IIS then reinstall IIS with all Exchange services stopped?
To my knowledge there is no supported method to reinstall IIS when Exchange is installed.
There are a few things I would suggest having a check:
1.After the reboot or if configured manually, can all the Exchange services return to "Running" status?
If not, can you find other error events like Event 2080 in Event Viewer>Application log?
2.Can you open Exchange Management Shell?
3.Have you start the Default web site and Exchange back end IIS sites? If you cannot start these sites, what is the detailed error message?
If it is impossible to restore the Exchange server to a functional state, do you have backups before the power failure?
If yes please consider restoring from the backups.
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