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Knowledge document #143

FRITZ!Box USB remote connection reports "Debug Assertion Failed"

When installing the FRITZ!Box remote connection software, the error message "Microsoft Visual C++ Debug Library: Debug Assertion Failed!" is displayed. Installation cannot be completed.

Changing the computer name in the operating system

According to Microsoft's definition, computer names may only contain standard letters (A-Z, a-z), numerals (0-9), and hyphens (-). Therefore, rename the computer and do not use any special characters in the name:

  1. Click (Start) and then (Settings) in the Windows task bar.
  2. Click "System" in the "Settings" menu.
  3. Click "About" in the "System" menu and then "Rename PC".
    • The "Rename your PC" window opens.
  4. Enter a new name for the computer in the "Rename your PC" window and click "Next".
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