explorer.exe ask me for microsoft account passw.

If you feel this task is too dauting, then find a neighborhood computer repair shop or some techy kid to help you

Very sorry to hear that indeed- in which case you're doing extremely well to attempt this.

To try to find a 3rd party program causing problems simply needs patience and working carefully.

Before making changes to your PC, always make sure you have a way back.
Besides the record you keep, start my creating aSystem Restore point

Note too that Autoruns lets you back up and restore its settings.

With those- and there are other ways- you can be pretty sure of getting back to where you were.
Using 3rd party disk imaging regularly and routinely is also endlessly recommended here - to secure your whole O/S and more so you can recover even if your disk failed, was impacted by ransomware, or perhaps even to a new PC if yours failed or was stolen - etc.

p033928 said:

...i'm afraid that should be like to find a needle in a haystack

Yes, Clean booting can take ages & be tedious. But it is an effective means of narrowing down the cause of a symptom.

Try3 said:

And those three smartcard entries might also be a candidate for wanting you to login, I would have thought.

This thread is getting very long so I might have missed it but I do not recall your having tried disabling those smartcard entries.
If you no longer use a smartcard you could uninstall its application.
I don't remember you running a Repair install [a repair tool not an installation].

Do you have many applications?
If not, you might consider making a new system image then reinstalling Windows.


All the best,
Denis

p033928 said:

DONE...nothing change...the issue is still there...so MS services are involved....

Clean boot involves choosing different sets of things to enable.
It is not a single job but repeated jobs.
That should enable you to narrow things down to a single culprit.

Denis

about the tutorial you linked i'm here:
" If no startup item causes this problem, a Microsoft service probably causes the problem. To determine which Microsoft service may be causing the problem, repeat steps 11 through 14 without checking the Hide all Microsoft services box in each step."......:
this really means the neverending story...
maybe i will die, due of my old age.., before .....
...and the risk of no starting pc should be very high so....



important update:

just taking a look at my events log, but i’m really not an expert so please in this case i pray you to guide me,

just now i see this that i copied in a text editor and attach here,

(there is written something about windows hello for business….but i really do not have it in my pc…)

Nome registro: Microsoft-Windows-User Device Registration/Admin
Origine: Microsoft-Windows-User Device Registration
Data: 19/03/2024 16:59:47
ID evento: 360
Categoria attività:Nessuna
Livello: Avviso
Parole chiave:
Utente: pc\
Computer: pc
Descrizione:
Il provisioning di Windows Hello for Business non verrà avviato.
Il dispositivo è aggiunto ad AAD (AADJ o DJ++): Not Tested
L'utente ha eseguito l'accesso con le credenziali AAD: No
I criteri di Windows Hello for Business sono abilitati: Not Tested
Il provisioning successivo all'accesso di Windows Hello for Business è abilitato: Not Tested
Il computer locale soddisfa i requisiti hardware di Windows Hello for Business: Not Tested
L'utente non è connesso al computer tramite Desktop remoto: Yes
Il certificato dell'utente per i criteri di autorizzazione locali è abilitato: Not Tested
Il computer è gestito dai criteri none.
L’attendibilità cloud per i criteri di autorizzazione locale è abilitato: Not Tested
L’account utente include il cloud TGT: Not Tested

The "Built In Administrator" is a separate account from your normal Administrator user account.
How To Enable Hidden Administrator Account In Windows 10

Start a Command Prompt as Admin, and type the following Bold command and press Enter
Net user administrator /active:yes
You should see the message, The Command completed successfully

As a test, Sign Out as you and Login as the now visible Administrator account. See if your seeing the same problem. If not, then there is an issue with your User Profile, not Windows.