Intune Unknown Error 0xFFFFFFFF

Question

Trying to deploy Office 365 apps via Intune and some people's computers don't want to install office.
Office Deployment Configuration:

• Uninstall Office, Project
• Install Office 365, Project 2016 Standard C2R with MAK key

Intune Error info:
Error code: 0xFFFFFFFF
Unknown

Troubleshooting steps taken:

• Compared GPOs applied to a computer/user that successfully installed the apps (no issues/major GPO differences found)
• Granted user local admin on the computer (shouldn't be necessary)
• Examined Event Logs and didn't find any useful errors at the time the install failed
• Validated that antivirus didn't block anything during the installation
• Will be checking to see if manually running the office deployment tool is successful on the machine, but found that previously this didn't work for another user (the other user had zero issues doing an interactive install)

Any help would be appreciated.

Answer 1

@James Rowan Thanks for posting in our Q&A.

To clarify this issue, we appreciate your help to collect some information:

1. Please make sure the device meets the requirements in the following article:
   https://learn.microsoft.com/en-us/mem/intune/apps/apps-add-office365#before-you-start
2. Please check if we can see the two folders "Microsoft Office" and "Microsoft Office 15" appearing in the C:\Program Files directory of the device.
3. Please check if there is any error message under Windows Logs > Applications in Windows Event Viewer.

If there is anything update, feel free to let us know.

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Answer 2

For us it was that M365 version of office is click to run - we had project / visio installed on the machines and they were the MSI versions

Office C2R will not install alongside the MSI version and so the installation fails with this (rather unhelpful) error code

The "fix" is to uninstall the MSI versions of Project / Visio and then reinstall those using C2R versions (which you cant install with the MSI version of older office items installed) but of a nightmare really!

The "real" fix then is to package up and script the install of the whole lot based on whats on the machine

Answer 3

Compared GPOs applied to a computer/user that successfully installed the apps (no issues/major GPO differences found) Granted user local admin on the computer (shouldn't be necessary) Examined Event Logs and didn't find any useful errors at the time the install failed

Regards,
N pelton