Windows 7: An update is causing network problems. See how to solve

On Tuesday (08/1), Microsoft began releasing the update KB4480970 for Windows 7. And this update supposedly broke the network settings on some systems, according to various forums reports.

Installing the January 2019 cumulative update on your Windows 7-based device, which is on a network that uses SMBv2 (version 2), will cause you to experience unexpected network connectivity issues. SMB is a network file-sharing protocol that allows applications on a computer to read and write to other files and request services from server programs on a network of PCs.

A Reddit site topic revealed that SMBv2 could no longer be connected after installing this patch. Administrators with networks that use SMBv2 shares are reporting the bug.

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“Jesus … 3 customers called my office today because they could no longer access their shared folders. It took me a long time to find a solution. Deletion of the KB4480970 update solved the problem, “a user reported in the Reddit discussion.

“We have the same problem on a Windows 2008 R2 server. We also can not authenticate with our server hosted on the network itself, “noted another user who later confirmed that patch removal corrected the issues. Users also documented the problem on Twitter.

Andrew M
KB4480970 which is the Jan 2019 roll up for Windows 7 is causing lots of issues with SMB shares. Just FYI for any IT folks out there dealing with sharing issues today.

16:35 – 9 January 2019
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And more evidence was found. In a topic posted on the TechNet forum, which is Microsoft’s own, users are reporting that the KB4480970 update causes problems in Windows 2008 R2 Server. The report also revealed that uninstalling the update addresses the issue.

Learn how to uninstall the Windows 7 KB4480970 update to fix network issues
Open the Windows Control Panel and navigate to the Program and Features> Installed Updates page, which lists all updates that have been recently installed on the system;

You can search the listing manually and find the update that begins with the letters KB;

Once located, right-click and select Uninstall from the context menu;

Windows will uninstall the update;

Restart the PC and you will be able to access the network again.

Did you also experience network problems after installing the latest Windows 7 updates? Let us know in the comments below.

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