Assuming you manage to find this file on a torrent site, a file-sharing forum, or a pop-up ad, and you execute it on a Windows 7 (or via compatibility mode on Win10/11):
If you have already downloaded windows6.1-kb958-488-v6001-x86.msu from an untrusted source but have run it: Windows6.1-kb958-488-v6001-x86.msu Download REPACK
If you need legacy updates for Windows 7 or Vista, only use the official ( catalog.update.microsoft.com ) or WSUS . Never, ever, touch a file with "REPACK" in the name. Assuming you manage to find this file on
: Modified system files can cause "Blue Screen of Death" (BSOD) errors or boot loops. A REPACK version of the update implies that
A REPACK version of the update implies that the original package has been re-released, possibly with additional fixes or improvements. This can be significant for users who have already applied the original update but are still experiencing issues.