[Windows 10 Mobile] titi66200:
I have changed this.

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\MTP]
"DataStore"="C:\Data\Users\PUBLIC"

[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\mtp]
"ImagePath"=hex(2):25,00,53,00,79,00,73,00,74,00,65,00,6d,00,52,00,6f,00,6f,00,\
74,00,25,00,5c,00,53,00,79,00,73,00,74,00,65,00,6d,00,33,00,32,00,5c,00,73,\
00,76,00,63,00,68,00,6f,00,73,00,74,00,2e,00,65,00,78,00,65,00,20,00,2d,00,\
6b,00,20,00,57,00,50,00,4e,00,6f,00,4e,00,65,00,74,00,77,00,6f,00,72,00,6b,\
00,00,00
;Value:%SystemRoot%\System32\svchost.exe -k WPNoNetwork

"ObjectName"=".\\WPNONETWORK"

[HKEY_LOCAL_MACHINE\software\microsoft\windows nt\currentversion\svchost]
"WEH"=hex(7):77,00,65,00,68,00,73,00,76,00,63,00,00,00,00,00
;Value:wehsvc

"WPNoNetwork"=hex(7):4d,00,74,00,70,00,00,00,70,00,6f,00,77,00,65,00,72,00,6e,\
00,6f,00,74,00,69,00,66,00,00,00,57,00,50,00,54,00,70,00,6d,00,56,00,53,00,\
43,00,4d,00,67,00,72,00,53,00,76,00,63,00,00,00,42,00,6c,00,75,00,65,00,74,\
00,6f,00,6f,00,74,00,68,00,50,00,42,00,41,00,50,00,53,00,76,00,63,00,00,00,\
42,00,54,00,41,00,47,00,53,00,65,00,72,00,76,00,69,00,63,00,65,00,00,00,42,\
00,74,00,68,00,4d,00,41,00,50,00,53,00,76,00,63,00,00,00,42,00,74,00,68,00,\
41,00,56,00,43,00,54,00,50,00,53,00,76,00,63,00,00,00,57,00,77,00,61,00,6e,\
00,53,00,76,00,63,00,00,00,55,00,74,00,6b,00,53,00,65,00,72,00,76,00,69,00,\
63,00,65,00,00,00,53,00,72,00,75,00,6d,00,53,00,76,00,63,00,00,00,57,00,63,\
00,6d,00,73,00,76,00,63,00,00,00,50,00,68,00,6f,00,74,00,6f,00,73,00,53,00,\
76,00,63,00,00,00,51,00,75,00,69,00,63,00,6b,00,53,00,65,00,74,00,74,00,69,\
00,6e,00,67,00,73,00,53,00,76,00,63,00,00,00,00,00
;Value:Mtp powernotif WPTpmVSCMgrSvc BluetoothPBAPSvc BTAGService BthMAPSvc BthAVCTPSvc WwanSvc UtkService SrumSvc Wcmsvc PhotosSvc QuickSettingsSvc

by this.

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\MTP]
"DataStore"="C:\"

[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\mtp]
"ImagePath"=hex(2):25,00,53,00,79,00,73,00,74,00,65,00,6d,00,52,00,6f,00,6f,00,\
74,00,25,00,5c,00,53,00,79,00,73,00,74,00,65,00,6d,00,33,00,32,00,5c,00,73,\
00,76,00,63,00,68,00,6f,00,73,00,74,00,2e,00,65,00,78,00,65,00,20,00,2d,00,\
6b,00,20,00,57,00,45,00,48,00,00,00
;Value:%SystemRoot%\System32\svchost.exe -k WEH

"ObjectName"="LocalSystem"

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\SvcHost]
"WEH"=hex(7):77,00,65,00,68,00,73,00,76,00,63,00,00,00,4d,00,74,00,70,00,00,00,\
00,00
;Value:wehsvc Mtp

"WPNoNetwork"=hex(7):70,00,6f,00,77,00,65,00,72,00,6e,00,6f,00,74,00,69,00,66,\
00,00,00,57,00,50,00,54,00,70,00,6d,00,56,00,53,00,43,00,4d,00,67,00,72,00,\
53,00,76,00,63,00,00,00,42,00,6c,00,75,00,65,00,74,00,6f,00,6f,00,74,00,68,\
00,50,00,42,00,41,00,50,00,53,00,76,00,63,00,00,00,42,00,54,00,41,00,47,00,\
53,00,65,00,72,00,76,00,69,00,63,00,65,00,00,00,42,00,74,00,68,00,4d,00,41,\
00,50,00,53,00,76,00,63,00,00,00,42,00,74,00,68,00,41,00,56,00,43,00,54,00,\
50,00,53,00,76,00,63,00,00,00,57,00,77,00,61,00,6e,00,53,00,76,00,63,00,00,\
00,55,00,74,00,6b,00,53,00,65,00,72,00,76,00,69,00,63,00,65,00,00,00,53,00,\
72,00,75,00,6d,00,53,00,76,00,63,00,00,00,57,00,63,00,6d,00,73,00,76,00,63,\
00,00,00,50,00,68,00,6f,00,74,00,6f,00,73,00,53,00,76,00,63,00,00,00,51,00,\
75,00,69,00,63,00,6b,00,53,00,65,00,74,00,74,00,69,00,6e,00,67,00,73,00,53,\
00,76,00,63,00,00,00,00,00
;Value:powernotif WPTpmVSCMgrSvc BluetoothPBAPSvc BTAGService BthMAPSvc BthAVCTPSvc WwanSvc UtkService SrumSvc Wcmsvc PhotosSvc QuickSettingsSvc

And now MTP working on my 950 XL acces resticted folders like

c:\PROGRAMS

c:\Data\PROGRAMS\WINDOWSAPPS