How to Fix Office 365 Pro Plus Error CAA50021: Device Registration Issue

How to Fix Biuro 365 Pro Plus Error CAA50021: Device Registration Issue. Ten błąd may occur in any Biuro 365 Pro Plus desktop application.

We weren`t able to register your device and add your account to Windows. Your access to org resources may be limited.

Rozwiązanie 1 Wiersz poleceń (CMD)

Better use the command prompt because Okna PowerShell does not understand %ProgramFiles(x86)% in command. But the solution can be completed in both CMD I PowerShell.

1. Run Wiersz poleceń Lub PowerShell

2. At appeared Wiersz poleceń application right mouse button click and select Run as administrator;

3. Type the following command:

cscript.exe "%ProgramFiles(x86)%\Microsoft Office\Office16\ospp.vbs" /dstatus

4. After that, you get some information about Office installation and:

Last 5 characters of installed product key: XXXXX

5. Type the following command, where XXXXX – your last 5 characters of the installed product key:

cscript.exe "%ProgramFiles(x86)%\Microsoft Office\Office16\ospp.vbs" /unpkey:XXXXX

Rozwiązanie 2 (Windows PowerShell)

1. Right Mouse button click on the Start button and run Okna PowerShell (Administrator);

2. Type the following command:

cscript.exe "C:\Program Files (x86)\Microsoft Office\Office16\ospp.vbs" /dstatus

3. After that, you get some information about Office installation and:

Last 5 characters of installed product key: XXXXX

4. Type the following command, where XXXXX – your last 5 characters of the installed product key:

cscript.exe "C:\Program Files (x86)\Microsoft Office\Office16\ospp.vbs" /unpkey:XXXXX

Rozwiązanie 3 (Registry Editor)

Change Registry to disable modern authentication for office applications.

1. Kliknij Start button and type:

regedit

2. At appeared Registry Editor application right mouse button click and select Run as administrator;

3. Przejdź do:

HKCU\SOFTWARE\Microsoft\Office\16.0\Common\Identity\

4. And set key EnableADAL REG_DWORD to Value: 0