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Issue Upgrade error followed by Uninstallation error followed by Installation error

EpicStateMusic

New Pleskian
Hi, I recently upgraded from Onyx to Obsidian. This resulted in a internal server error story which I assume had to do with IIS and which I did not manage to fix (due to limited knowledge about servers and code).

So I uninstalled as described using Windows regular procedure, what I did not notice then was that it had some errors. I then reinstalled Obsidian and again returned with a lot of internal server errors, I don't think I even got to the control panel this time.

I uninstalled (with more errors) and tried to remove all files manually (with errors saying files were still in use). I then reinstalled Onyx which seemed to work somewhat actually, until I tried to autoinstall Wodpress on one of my domains. Left me with a CGI-error.

So I researched more and tried to uninstall IIS, if the server config itself was the problem. No problems with reinstalling it. Then I tried to install Obsidian once again, hoping it would work this time. The installation came out with a lot of errors provided below. I have no idea how to get back on the road with this.. A Windows Server reinstallation might be the way, but rather not!

kind regrads
 

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