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Corrupt system files

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SRoper:
I think there's a part of the text file that may not have copies across so am also attaching the text file. Most sincere thanks for your help.

Boggin:
I'm not sure if unregistering iesysprep.dll and then re-registering would resolve as the one in the store is also corrupt.

This can also be caused by an infection, so running an anti-malware scan with something like the free version of MBAM in Safe Mode with Networking may find something.

https://www.malwarebytes.org/mwb-download/

You can decline the offer of the Premium trial during its installation and when it has updated itself, click on Settings/Detection and Protection and ensure it is treating PuPs and PuMs as malware - you can use the dropdown to change that status.

What problems were you having for you to run the sfc /scannow in the first place and did uninstalling Revo return the cmd prompt to the same as mine ?

To unregister and re-register, run a cmd prompt as an admin then enter -

regsvr32 /u iesysprep.dll

regsvr32 /i iesysprep.dll

shutdown /r /t 00 (which will reboot the computer).

Run another sfc /scannow to see if that has resolved.

SRoper:
Thank you very, very much for your further guidance. I run malwarebytes very regularly so am satisfied that there is now no infection on my machine. I only started doing this about three to four months ago and at that time did discover that there were infections on my machine. I can't unfortunately say whether this is about the time of discovering the corrupted files. I have not idea when this may have happened. I have tried to unregister and re-register as you suggest a get the message shown in the attachment. Would value your further guidance most highly.

Boggin:
What is the response when you just enter regsvr32 iesysprep.dll ?

SRoper:
Thank you. I get the same message. See attached screenshot.

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