OneDrive Business Account can't connect (0x8004e4c3)

We have disabled IE11 in our business as per Microsoft's guidelines so we are having to use the following command to reset IE information.

RunDll32.exe InetCpl.cpl,ResetIEtoDefaults

We have found that this appears to work for the numerous Onedrive and Teams errors we have had lately. Together with revoking logon sessions from the admin console.

What I find so frustrating is that there appear to still be legacy authentication happening with both OneDrive and Teams that are reliant on IE cache even though they themselves have sunset IE.

Please Microsoft sort your office suite out and make it consistent, this is driving us nuts. We are having to delete profiles, reset IE 11 settings and revoke logons on a weekly basis for an ever growing group of our roaming laptop users now. Our workaround document now extends to 2 pages to get them back online.

After experiencing the same problem, not just with OneDrive for Business but also with Teams, I spent many hours trying to work out what was happening. I was running the lattest Windows 11 build and I really didn't want to create a new user profile, as has been suggested.

I then contacted Microsoft support and spent over an hour trying to resolve this with them. Eventually, after this didn't work and we agreed to part ways, I stumbled across this nifty little instruction that fixed it by resetting Internet Explorer settings:

1. Start a Command Prompt (I selected to run as administrator)
2. Run this command: RunDll32.exe InetCpl.cpl,ResetIEtoDefaults

That's it, easy as that, no new user profiles that I have to create and then try to set all back up again, just simply run the command that resets Internet Explorer settings. BIZARRE! Especially when this application is meant to be deprecated and unsupported, yet underlying processes still rely on it being there.

Since yesterday, seemingly out of the blue, my OneDrive Business accounts stopped syncing on both my PC and my Laptop. After signing out I cannot sign back in and get the error code 0x8004e4c3, and the error no network connection [2603].

I'm using Windows 11 Build 22000.795 and the latest OneDrive version.

Same problem as here:

https://answers.microsoft.com/en-us/msoffice/forum/all/no-network-connection/0c20a333-434c-4115-bf5b-f5046086220d

Clearing the cache and reinstalling OneDrive didn't help. Neither did disabling the firewall or my windows defender. Again, I could connect to my personal account but not to the institutional account.

TLS 1.0, 1.1, 1.2, and 1.3 are enabled. Still doesn't work.

Any help would be much appreciated, my workflow is currently majorly impaired.

Hey,

I have had this happen to about 5 users' now and counting. I think Dave Heimberg is on the right track. Every time I was able to resolve this issue by resetting Internet Explorer setting, then rebooting the user's machine.

1. Go to control panel.
2. Then select Internet Options.
3. Select advanced options.
4. Restore Advanced Settings.
5. Reboot and issue is resolved.

Hope this helps!

Since yesterday, seemingly out of the blue, my OneDrive Business accounts stopped syncing on both my PC and my Laptop. After signing out I cannot sign back in and get the error code 0x8004e4c3, and the error no network connection [2603].

I'm using Windows 11 Build 22000.795 and the latest OneDrive version.

Same problem as here:

https://answers.microsoft.com/en-us/msoffice/forum/all/no-network-connection/0c20a333-434c-4115-bf5b-f5046086220d

Clearing the cache and reinstalling OneDrive didn't help. Neither did disabling the firewall or my windows defender. Again, I could connect to my personal account but not to the institutional account.

TLS 1.0, 1.1, 1.2, and 1.3 are enabled. Still doesn't work.

Any help would be much appreciated, my workflow is currently majorly impaired.

Our organization has had the same problem recently. So far on two laptops, including one that I use for testing. One was Windows 11 and my test laptop is Windows 10.

We tried all the usual fixes, resetting Onedrive, re-installing one drive, even re-installing office completely. We have the latest versions of the Office 365 and Onedrive apps installed. There seems to be very few posts with this specific error code  0x8004e4c3 so I am guessing its a relatively new problem.

The problem appears to be some corruption in the users profile which then results in connectivity issues between the client and office 365 service. The problem for us was nothing to do with TLS 1.2 but I suspect it may be to do with the secure connection between client and server breaking because of the problem somewhere in the users profile. For us the only solution was to delete users domain profile from the laptop and logon on with a fresh one. The new profile was then able to connect.

Our laptops are a mix of on premise AD joined and Azure AD joined, I have seen this problem first hand on one of each.

We have 2FA enforced for all of our users.

I suspect we may be seeing more of this problem in the future, will post back here if that happens.

Fixed. After using my institutions vpn I could finally log in. (Never had to use it before...)