1, The double backslash between OSD and the bin maybe not a problem for you. This is my log screenshot for your reference:
2, To narrow down the problem, we may need more information. Which step are you stuck at? Install ADK and Windows PE or other?
Can we find the ccmcore.dll file under the path of __\MECMSERVER\SMS_SITECODE\OSD\bin\x64__? For this error, please help upload full SMSPROV.log for our reference.
3, I find a similar thread, someone resolved this error by delete the folder BootImages from the path C:\Windows\Temp... Besides, please make sure that you have permission to access and write these two paths.
The link for your reference:
Looking forward to your feedback.
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