80386, it usually implies a binary compatibility with the 32-bit instruction set of the 80386. 64 bit processors became available to the general public in the early 2000's with AMD first then Intel. MS did have a version of XP that was 64 but it wasn't a huge success. Vista came in both 32 and 64 bit version and 64 bit really became a success in WIndows 7. 32 bit app run in 32 and 64 bit OS's and 64 bit apps only run in a 64 bit OS.
My desktop is running Windows 10 Pro 64-bit, version 1709, build 16299.547. The CPU is an Intel Core i7 4770K, and RAM is 32 GB DDR3 dual channel. Windows reports processor as X64-based. This is confusing, since I expected the designation to be x86. I'm attempting to install Windows 10 update 1803 with no success, i.e., every suggestion from net has failed.
Referring only to Microsoft support, a suggestion is to re-install the current version (1709) - and system type (X64) - from the Windows Update Catalog. When the X64 version is downloaded, the file name is AMD64****. Is this MS' nomenclature for 64-bit x86 systems?
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