Install Office 365 get error code: 30183-48(401)

Tenemos el mismo error. Ya intentamos con SARA, limpiamos todo, y sucede nuevamente al 95% de la instalación.

Estamos pagando una suscripción que nos es inútil. La PC es una notebook con windows 10, que tiene sus actualizaciones al día. No tenemos el firewall activado ni ningun antivirus extra, es más, desactivamos el que trae Windows por defecto. Frustrante a más no poder

I have a user with similar issue. She claims problems started after an update (KB5033372), after which, Outlook would hang "Processing" at blue banner box.

Tried quick and online Office repairs, SFC, DISM, etc. Did regular uninstall, MS office removal tool, reinstall with portal.office.com and finally offline installer.

Nothing helped, it still comes with same error at 95%

As mentioned, applications are there, but Outlook just keeps "processing". Safe mode loads interface but is stuck "Trying to connect..." for several minutes.

Switching to "new Outlook" works as temporary solution.

We're running Cylance Protect as our AV, anyone else?

Hello Dylan, thank you for reaching out to Forum Support. Error code 30183-48 (401) usually occurs when there is a problem with the internet connection or the firewall settings on your computer. Here are some steps you can try to resolve this issue:

1. Check your internet connection and make sure it is stable.
2. Disable any antivirus or firewall software temporarily and try to install Office again.
3. Clear the cache and cookies on your web browser and try to install Office again.
4. Try to install Office using a different web browser or device.

Error code 30183-28 when installing Office - Microsoft Support

I'm still trying to get Gmail resynced. Some of it is working but the look and feel (the UI) of Outlook has changed despite NOT having the "New and Improved" Outlook running. I'll keep this thread posted.

Same here... 😫