Yesterday, a number of Windows 7 and Windows Server 2008 users reported that they are experiencing Windows Update error 80248015 on Windows 7 when they check for system updates.
If you run a device that is powered by Microsoft's Windows 7 operating system, you may have noticed already, or not, that the system's update functionality may be broken completely.
Windows Update is supposed to help keep your system up to date and safe, but according to a report from ZDNet, the feature is not working at all for some Windows 7 users.
For users running the Fall Creators Update, a bug is known to block the cumulative security updates (aka Quality updates) if they try to delay the feature updates using the Group Policy Editor, according to a thread on Microsoft TechNet forum. The error 80248015 is displayed, but anything you try to resolve the issue on your end fails.
Apparently, restarting the computer does not resolve the issue, and you may still come across the error message if you have downloaded updates on your computer recently.
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Note that this underlying cause has been reported by affected users and not by any official, as Microsoft is yet to comment on the issue. It is unclear if all Windows 7 systems or if only a subset of systems are affected by the issue.
The problematic file is found in C:\Windows\SoftwareDistribution\AuthCabs\authcab.cab that contains an XML file called authorization.xml set to expire on 12/3/2017 at 11:59:25 PST. The users came across this issue on December 3 and has been growing since then. Windows Update encountered an unknown error.
Navigate to: System and Security - Windows Update - Change Settings - Choose how Windows can install updates.
One Windows 7 user said: "When I clicked on the Windows Update icon today to start the updates it said that my computer was up to date and that there were no updates available which I know was not the truth because I hadn't installed any of the [recent ones]".