
The installation failed in SAFE_OS phase with an error during INSTALL_RECOVERY_ENVIRONMENT operation.

The copy process stops at 84% and setup drops error code 0xC1900101 – 0x20004. This is the step, where install files are copied to the destination partition. The users are observing that install progress stall at 25%. I don't want "solutions" saying to make a clean new installation, I want to keep my files + applications + conf stuff.The error has been reported during upgrading Windows 7 or Windows 8.1 to Windows 10 (final and Preview Builds). 23:47:42, Error SP CSetupPlatformPrivate::Execute: Failed to deserialize/execute post-FirstBoot operations. 23:47:42, Error SP Operation execution failed. 23:47:42, Error SP ExecuteOperations: Failed execution phase Post First Boot. 23:47:42, Error SP Operation execution failed: 13. 23:47:42, Error SP Operation failed: First boot apply. 23:47:42, Error SP Apply (first boot apply, online phase): Migration phase failed. enum MIGSTATUS _cdecl pSPExecuteApply(enum SetupPlatform::SP_MIG_SCOPE,class UnBCL::String *,int,int,int,class UnBCL::ArrayList *,class UnBCL::String *,class UnBCL::String *,class UnBCL::ArrayList *> *,class UnBCL::String *,int,int,class UnBCL::String *,class UnBCL::String *,class UnBCL::String *,class UnBCL::String *,class UnBCL::String *,class UnBCL::String *,class UnBCL::ArrayList *,class UnBCL::String *,int *,class CSPTelemetryData *,struct ISPMigProgress *,long *) 23:47:42, Error SP pSPExecuteApply: Migration phase caught exception: Win32Exception: User profile suffix mismatch, upgrade cannot continue: The specified profile is intended for a device of a different type than the specified device.

23:47:42, Error SP User profile suffix mismatch, upgrade cannot continue. 23:47:37, Error MIG Ignoring replacement manifest with no settingsVersionRange or versionRange attribute in migration element: Microsoft-Windows-Container-Manager Don't know how useful it is since I think that lots of errors in it are not necessarily triggering the install bug.

I can copy/paste the end of the 729 lines long file from C:\$Windows.~BT\Sources\Panther\setuperr.log if it helps. The installation failed in the FIRST_BOOT phase with an error during MIGRATE_DATE operation.
