Office 365 download failed file incomplete

While downloading the Microsoft Office 365, you may encounter download of Office 365 file failed, error =. Let’s look at some ways to fix this error.

One of the easiest way to add an Office 365 installer is via the Configuration Manager console. Using the Office 365 installation wizard you can download, customize and deploy Office 365 to endpoints.

I have used the Office 365 installer to package and deploy Office 365 pro plus several times. I haven’t encountered any errors during download.

While this whole process works fine, sometimes you may encounter issues with Office 365 file downloads. In most cases you see a specific error code. For example Office 365 error code 5, means access denied.

If the required setup files won’t download, the wizard throws an error and just halts. So before you blame it on Configuration Manager, let’s look at some solutions.

Download of Office 365 file failed, Error =

Recently I saw people posting about the Office 365 file download error in my ConfigMgr forums. The error is Download of Office 365 file failed, error =. This error is observed while downloading the Office 365 setup files and the interesting part is there is no error code and it’s just blank.

Without error code it’s very difficult to troubleshoot the O365 file download issue. Moreover I cannot even think of reviewing any log file in this case.

If you are unable to download the Office 365 setup files and you have encountered the same issue, here are some of the solutions.

Install ConfigMgr 2006 Hotfix KB4578605

There is a new hotfix KB4578605 for ConfigMgr 2006. This hotfix fixes the issue where the Configuration Manager clients are unable to download Office 365 updates. ERROR: DownloadContentFiles() failed with hr=0x80073633. So ensure you install this hotfix and try downloading the updates again.

Check your Firewall Configuration

So with no error code, we don’t know why this issue is occurring. However we know that the Office 365 downloads aren’t working. So the first thing that you must do is check your firewall configuration. We all know that Office 365 requires connectivity to the Internet. The endpoints should be reachable for customers using Office 365 plans. Endpoints data is updated almost every month with new IP Addresses and URLs published 30 days in advance of being active. Endpoint data in this article lists requirements for connectivity from a user’s machine to Office 365. Talk to your network team and whitelist the endpoints provided in that article and give a try. I am confident that Office 365 downloads will work.

Office 365 Application Deployment

The second solution is bit weird but I see it has worked for few. Here is the Technet forum thread that I am talking about. The issue is resolved by changing the setting Do you want to deploy the application now? to Yes.

Uninstall October 2020 Update (KB4577668)

I am updating this solution after I saw an update from ConfigMgr product team.According to David James’s tweet, Windows October patches broke #configmgr #memcm’s ability to download o365 patches. we are working on a hotfix, and KB. The break is caused when the machine doing the download (admin UI, or ADR) is patched with oct’s 10b patches; causing a cert failure.

So the only workaround for now until a fix is released, is run the Admin UI on a machine that isn’t patched to 10b and manually sync the o356 patches.

According to Robinson Chan, seems like the October 2020 Update (KB4577668) on your primary site server may be the cause of the issue. In the Patchdownloader.log, you may see error: Authentication of file failed, error 0x800b0004.

Current workaround is to remove the Oct 2020 Update (KB4577668) on the Primary Site Server and then restarting the Server. Thanks Robinson for this info.

Apart from the two solutions listed above, If something else has worked for you, let me know and I will add it to this post.