The message is misleading. It searches if the update can be installed or if the update is no longer needed (superseded).
Line #, DPC/ISR, Process, Stack Tag, Stack, Count, TimeStamp, % Weight
10, , , , wuaueng.dll!CUpdatesToPruneList::PopulateSupersedenceInfo, 31521, , 43,72
11, , , , wuaueng.dll!CUpdatesToPruneList::AddSupersedenceInfoIfNeeded, 31521, , 43,72
WUSA.exe, which is used to install MSU updates, is just a wrapper to Windows Update. After Windows Update installed an update it hangs again in a loop to check if updates apply or not and those checks are useless after an install and this loop blocks you from installing other MSU updates.
To speedup the Installation, stop the WindowsUpdate service via GUI (services.msc) or via elevated (running as admin) command line (net stop wuauserv
). Now the loop is stopped and updates install faster.
Install the first MSU update, stop WindowsUpdate service again and install the 2nd MSU file.
I also created a script with enums all MSU files in the same folder as the CMD and installs them and stop WU service on it's own everytime to speedup setup.
The key reason for needing to get these two fixes on is to get the faster Windows Update system, so it can actually download all the updates it needs (it's never gotten its updates) – Thomas Ward – 2016-02-23T16:37:51.263
Similar issue – Moab – 2016-02-23T22:03:48.467
2@Moab Not really. The issue observed here is specifically with the Standalone installer; it is NOT about overall Windows Update - that's what the second of the MSU packages I was trying to install was for. Therefore, I don't believe they are similar, as I was specifically having issues with the
wusa.exe
program, which is the standalone installer for package files for updates – Thomas Ward – 2016-02-23T22:07:56.877Similar issue was resolved in that post by disconnecting from the internet while installing stand alone MS installers. Just a different method than disabling wuauserv. – Moab – 2016-02-23T22:22:49.467
1@Moab Tried and failed - didn't solve the issue as
wusa
was still trying to "search" and never found anything. – Thomas Ward – 2016-02-23T22:48:56.7274@Moab NO, this has nothing to do with Internet conenction. I traced this issue years ago with xperf/WPA. After the first MSU install, WU service scans if all MSI/MSP files are valid, this takes a lot of time and so the 2nd update can't start detect if it can be installed. My workaround stops the useless MSI scanning. – magicandre1981 – 2016-02-24T05:17:01.267
2believe what you want but I traced what Windows does or not. – magicandre1981 – 2016-02-25T05:23:56.447