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

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?

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

Did anyone get a actual solution to this error code? I have restarted, uninstalled twice - same result - any help toward fixing this would be greatly appreciated.

Update: I've been using Outlook all day and Word and Excel to some extent without issues other than version updates in Outlook that seem different. I had to reinstall the Outlook profile a couple of times to get it right, rebuild my favorites (the favorites folder disappeared until I reset the Navbar), and rebuild my quick steps and rules. After that, it was business as usual. In other words, despite the installer crashing near the end, the programs seem to be working.

This has all the characteristics of a central server failure and a snafu in the last update that broke something. Perhaps this is because the Office Team and the Windows team don't always talk to each other--or they didn't in my day.

I suspect there are a lot of engineers here in Redmond (Microsoft is in artillery range from my home), working 24/7 to figure this out, knowing that if they don't, they won't be opening presents on Monday. I'm just thankful that Outlook is working.

Hi, RonBarker:

Thank you for reply this. I disabled antivirus software, ping 8.8.8.8 and disable during install office.

that ping works very well, no any package lose or disconnect. But still get this error.

Please note:

My outlook and excel still works, but Office 365 actually not install 100%.

Dylan.