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On my machine (Windows 7, 64 Bit) the TrustedInstaller.EXE is permanently active. The amount of used CPU changes permanently. 2 seconds 0 % then up to 50% (I have a dual core) for a second then down to 0.
Rebooting the machine did not help. Also a complete Virus scan was negative.
I have monitored the process with the Process Explorer tool. I can see that the process always access the same Registry key when it gets active. The key is
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Component Based Servicing\PackageDetect\Microsoft-Windows-IIS-WebServer-AddOn-2-Package~31bf3856ad364e35~amd64~~0.0.0.
Locked Question. This question was migrated from the Microsoft Support Community. You can vote on whether it's helpful, but you can't add comments or replies or follow the question.
Hi Robear,
in the meantime I have found the process that was responsible for the trustedinstaller activities. It was the xenservice.exe that was installed together with the Citrix XenCenter on my machine. I have killed this process and suddenly the trustedinstaller.exe stopped its activities. So the problem is solved now because the XenCenter can work without this process and I will remove it from the auto
Thanks for your help.
Martin
Thank you for your comments.
You are correct in saying 'just let it continue to scan and some day it will get them all' - another poster had advised the same and yep, it did finally see the 222 Important updates and actually tried to install them.
Most of those failed (likely not needed after all) and several did install properly. Since then no amount of scanning would get any others and when it did get to the results only Optional updates were in the list.
The Optional updates were taking an extremely long time to download - even the disk light was out for quite some time. I finally killed the update effort and then it showed it had downloaded a partial update but showed Cancelled. Ah well...
I then picked one very tiny update of 168kb - I left the download run for over 30 minutes and it never completed in that time. Since this was so tiny it should have completed download AND install in about 30 seconds.
Even when I don't go to and start Check for Updates the Win Update PROCESS starts up, takes the CPU and memory to high usage and keeps them there without ever downloading or installing updates. This is not normal behavior and performance is severely impacted while they are kept high constantly.
All my computers get Windows updates without issue except for this laptop. This laptop has been updating flawlessly for years until some problems started in June 2015. Again, not to repeat myself - there were network awareness issues which I resolved by upgrading to Win 7 Pro but the Update problem did not get resolved.
At this point I will likely wipe the drive and do a clean install next week! The laptop hardware is good and quick so it is worth the expense and effort though I started considering a new laptop due to frustration. Once the laptop is healthy I will likely upgrade to Win 10 Pro.
Since upgrading to Win 7 Pro the laptop runs fast; file downloads are quick and never an issue - the only problem remaining is with Win updates and after a week of chasing it down we have not come to a resolution so a clean install is the next step.
Again, thanks for your comments. SevenForums is an excellent venue to get help from the community and posters like yourself help to make it worth the effort. Keep it up.
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I agree - this is total B.S. on MS part! I have been fighting with laptop for a week now - 8-12 hours each day.
I upgraded from Win 7 Home to Win 7 Pro and cleared many network problems but this SVCHOST and/or TrustedInstaller eating CPU cycles constantly is ridiculous and sours one on Windows based PCs.
We think we own and have control over our equipment when in fact MS can screw up OR do something on purpose to 'shake the tree' and nudge people to buy new equipment!
In my case, either SVCHOST or Trustedinstaller holds CPU @ 50% and Memory usage high as well and hits the drive a lot.
I did get many updates one day (must have had an open window) so all Important updates are installed. When I tried one single Optional update (168 kb - a mouse driver update) I let it try to download and install for about 30 mins. - never got it even though this is 1/10 of a MB in size. That should have completed in under 30 secs.
I stopped Windows Update PROCESS and the CPU returns to 2-7% at idle and memory drops to 27-34% which I consider normal and acceptable. This return to normal was IMMEDIATE when I stopped Windows Update process! This proves that WUpdate is the culprit.
I changed Automatic update to Sunday at 3:00am only and doing those two things makes my laptop 'normal' once again!
At this point I am considering buying a Win 7 Pro Full Retail CD online and building this laptop from scratch (been working on this for one week solid) but I have some gut worries that the problem will return.
Yes this works, so does
going to :
Control Panel\All Control Panel Items\Administrative Tools\services
and find windows update service - and set to manual.
have a look through the others services that are running and decide if you need these too.
I disable indexing for example, and take a delay when I want to find something, once in a blue moon.
