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MS365 products not signing in as even when internet connection is available

June Waldron 0 Reputation points
2026-03-28T16:44:13.19+00:00

Microsoft 365 products will not sign into 365 account when starting, claiming that there is no internet connection when there is an internet connection error 0x800704cf

MS support have checked everyting including the following:

net localgroup Administrator localservice /add

fsutil resource setautoreset true C:\

netsh inp it reset resetlog.txt

netsh winhttp reset proxy

netsh advfirewall reset

netsh winsock reset

ipconfig /flushdns

ipconfig /release

ipconfig /renew

They cannot fix the problem claiming that I need to use this service, otherwise I will have to completely reinstall windows.

I there a known issue and a fix for this before I have to take this drastic option?

Microsoft 365 and Office | Install, redeem, activate | For home | Windows
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  1. EmilyS726 221.7K Reputation points Independent Advisor
    2026-03-28T17:25:13+00:00

    Can you go check your Windows Settings > Windows update, and see if you might have  KB5085516 available to install?

    KB5085516 was released on March 21st to address Microsoft account sign in issue among some apps caused by KB5079473 https://support.microsoft.com/topic/march-21-2026-kb5085516-os-builds-26200-8039-and-26100-8039-out-of-band-09e85404-1cb6-4ed4-9ca5-3e40d74307b9

    You and 1 other person found this answer helpful.

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