Should I uninstall the secure boot update? Anyone else have this happen? I shouldn’t have to go into BIOS and disable secure boot just to boot a properly setup USB flash drive. Only thing I can figure out is the update for Secure Boot KB5012170 has caused this. She has UEFI mode secure boot system enabled, but I have been using this bootable flash drive to back up her system for years. I have never had that happen on her machine. Upon selecting the boot device, I was surprised to see the message, “Invalid signature detected – Check secure boot policy in setup”. Everything installed fine, Windows 10 Home 21H2.Īfter the update I attempted to boot from a bootable flash drive with my backup utility I use that I have used for 10 years. So if it crops up checking through the config files for anything funny is probably a very good first step.I updated my wifes computer this morning. So it looks quite likely that the error is a catch all (for IIS at least) when the process can’t read or get a lock on the IIS config for one reason or another. Reran the Add-WindowsFeature, and this time everything added itself properly. That was quickly removed and the config exported locally. BUT, it was still set up with a shared config folder. Doing this I discovered that the box had once been part of a shared config setup across a number of boxes, and was now the only one left. Not fancying a rebuild I thought I’d delve deeper into the IIS configuration to see if there was anything that could be manually fixed. Googling showed some MS notes that didn’t offer much information that seemed relevant to this particular case, and in once case seemed to suggest a complete rebuild as the error was due to a corrupted system/iis config issue. Spun up a Windows 2012 VM I had kicking around on my laptop and ran the same snippet, success. Tried going through GUI to do it, same error just took longer to pop up. So I double checked the syntax, but that looked fine. Only to get the wonderful response shown above in the screenshot. Doing everything the usual way, I was using PowerShell (as I do for all server admining this days, just so much faster) like so: I was working on trying install SSI (Server Side Includes) on an Windows 2012 IIS8 box, set up by someone else.
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