So you’re trying to upgrade to Windows 10 and have an error? Here is how to read those error codes and fix what’s wrong.
by Susan Bradley
Single number with 8 digits error code received early on in the process:
Suggests that it’s a Windows update issue. (Example 0x800700)
Troubleshoot with KB956702
https://support.microsoft.com/en-us/kb/956702
Common root causes: WU components not functioning properly, Internet connection issue, Malware
T
wo part error number: Example: 0xc1900101 – 0x2000c and 0xc1900101 – 0x30018
The first part tells you what happened, the second part tells you where.
If the second code starts with 1 or 2 the error occurred during the Down level or WinPE/Safe OS setup phases.
If the second code starts with 3 or 4, the error occurred during the first or second boot.
Code 1 or 2:
Check compatibility of the PC with the manufacturer
Remove security and system utility software
Check integrity of download of ISO and recreate if necessary
Common root causes:
System partition out of space
Damaged installation source files
Incompatible security or utility software
Firmware compatibility or security setting issue
Non standard boot configuration
Code 3 or 4:
Errors in this section are difficult to diagnose to a root cause particularly when they end with 17 or 18. These are often driver errors. Issues in this category may be caused by other software or hardware issues.
Disconnect all non-essential hardware
Update drivers for remaining hardware
Install all available Windows updates
Common root causes:
Incompatible device or driver
Incompatible security or utility software
Issue with the user profiles during migration of data
More resources:
How to: Troubleshoot common Setup and Stop Errors during Windows – Microsoft Community:
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