Fixing a 0x800700df error

Possible reason: File transfer limit in Webclient Service

  1. Open regedit
  2. Go to: HKEY_LOCAL_MACHINE \ SYSTEM \ CurrentControlSet \ Services \ WebClient \ Parameters
  3. Find: FileSizeLimitInBytes and open it
  4. Select Decimal
  5. Enter the following number:
    4294967295
  6. Click op OK
  7. Hold windowskey + R
  8. Enter services.msc
  9. Find WebClient
  10. Right click the service and select restart.

Done.

Install Group Policy Editor (gpedit.msc)

  1. Open command prompt with admin rights
  2. Enter the following one after the other and the software has been installed.
    1. FOR %F IN ("%SystemRoot%\servicing\Packages\Microsoft-Windows-GroupPolicy-ClientTools-Package~*.mum") DO (DISM /Online /NoRestart /Add-Package:"%F")
    2. FOR %F IN ("%SystemRoot%\servicing\Packages\Microsoft-Windows-GroupPolicy-ClientExtensions-Package~*.mum") DO (DISM /Online /NoRestart /Add-Package:"%F")

Change W10 password

One day, a friendly wolf said:

so all you need is a usb stick with a windows 10 installer, boot to that, click “Repair my pc” after it asks you for the language -> open the troubleshooter -> open the command line interface

then switch to the C drive
then cd Windows\System32\
rename osk.exe osk.old|
rename cmd.exe osk.exe
close and boot windows normally
click the On-Screen-Keyboard which now opens cmd.exe
net user “username” *
type new password

make sure undo your rename of the cmd.exe and osk.exe things after you’re done