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object reference not set to an instance of an object copy errors encountered " error when we try to update Media point created using MDT 2010

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Symptoms

We get error "object reference not set to an instance of an object copy errors encountered " when we try to update Media content of a media point created using MDT 2010. When we save output log shows errors below

Output error:

Copied: AB001:\Task Sequences with Replace option
Object reference not set to an instance of an object.
Copy errors encountered, copying will continue: 1 error(s) reported.
Copied: AB001:\Selection Profiles with Replace option
Copied standard folders.
Boot images updated.
Setting up x86 boot image.
Boot configuration editing completed.
Reset read-only attributes.

Starting: "C:\Program Files\Windows AIK\Tools\AMD64\OSCDIMG.EXE"  -u2 -m -o -h -b"C:\Program Files\Windows AIK\Tools\PETools\x86\boot\ETFSBOOT.COM" "D:\share\Media\Content" "D:\share\Media\LiteTouchMedia.iso" > "C:\Users\test\AppData\Local\Temp\Update-MDTMedia.1111\Update-MDTMedia-1000.log" 2>&1

Screen shot:

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Cause

This happens if we try to create a media deployment point in same folder as deployment share

E.g. deployment share folder would be in c:\deployment share

If Media deployment folder is in same folder e.g. c:\deployment share\media we won’t be able to update the media point it will fail with error "object reference not set to an instance of an object copy errors encountered”

Resolution

Make sure Media deployment folder is located on a different location

E.g. If deployment share folder would be in c:\deployment share

Media deployment point folder should be created as c:\media.

Try updating the media deployment point now and it should succeed without any issues