Windows Update Memory Leak | Solved

             Svchost.exe/Windows Update service Memory/CPU leak

      Suddenly your computer slowed down, facing performance issues, 100% CPU usage, RAM usage peaks and stays at 100%, PC crashed, Windows Update cannot currently check for updates, svchost.exe memory leak. Having windows update error 80072ee2 or 80070002 or 80072f8f or 80072efe or windows update stuck at 0 %.

                             Then you may be stung by a bug in windows update.

Windows svchost.exe high memory

How to check for Windows update memory leak bug  

  1. open task manager(right click taskbar)         
  2. switch to Processes tab
  3. choose show processes from all users
  4. then find svchost.exe using most memory or CPU
  5. right click it & choose to "go to services"
  6. from the highlighted services find if wuauserv is highlighted or not

If you see wuauserv aka windows update service highlighted then the performance issues and many other problems like high memory usage and high CPU usage is caused due to wuauserv.

 What is wuauserv?

                wuauserv is the Windows Update Service. It causes the windows update high CPU usage and a more famous windows update high memory usage or Memory leak making Windows slower.

It also causes the windows update to search indefinitely and not downloading any update. svchost high memory usages are mostly caused by this service. Also, read how to install updates in 1-click

See Also:

This service runs under the svchost.exe process.
Both of these problems are known as wuauserv high memory usage & wuauserv high CPU usage respectively.

Temporary Solution

Stop wuauserv service by right clicking it.

NOTE: Don't disable svchost.exe permanently as svchost.exe runs many essential services and task. Disabling it permanently can cause major problems and system instabilities.

                                          Permanent Solution:

   Download the latest Window Update Client or KB3138612

                                                    Windows update client


       Microsoft released the fix for the bug in march 2016 and now people experiencing svchost.exe high memory or svchost.exe high CPU usage can use their PC's without any problem.

NOTE:   Method is applicable to windows 7 service pack 1 (windows 7 SP1) x32 / x86 / x64 bit users as well as Windows Server 2008 R2 x64 / IA based users.

If you encounter any problem then just leave a comment, I'll get to it and 
Sharing is not a Sin!


  1. Wooh!! That solution worked like a miracle.I am experiencing this problem for roughly an year.I used to disable the service but it again starts on it's own but this fix it's amazing.Thank You!!

  2. @Shivam
    Congratulations on finding this Microsoft fix. I have been helping a friend with their laptop which had this problem with Windows Update. I tried for 2 days with different "solutions". His Windows Update was not even working anymore. This seems to have fixed everything. No more than 50% of his 4GB is now used when Windows Update is running. Still a lot of ram to run this compared with other operating systems; but so long as it works.

    Thank you so much for bringing it to my attention. Good luck with your blog.

  3. Спасибо, друг! Я не знал про это обновление, буду пробовать :) (Thanks)


    1. Благодаря вам другу . Есть ли поделиться :) (share it!)

  4. Thanks, this helped me out a lot.

  5. IT WORKS!!!! I was at the edge of collapse after 2 days trying some so called "solutions" without success. That's when I found (3 hours ago) your solution. I already downloaded, installed and tested the fix you mention lines above, and this is the result: No more high use of memory (it went up more than 2 GBs) and CPU (100%). Thank you. Really thank you! :)

    1. Thank You very much to share the review. Not many people bother to come back and share their reviews. Cheerful comments like yours always always motivates me to produce new content.

  6. Thank you very much for this fix. I got this problem with 3 laptops. Before, RAM increased always till almost 100%. After this fix, Windows Update finally works while using around 200-500MB!

  7. thanks sir shivam. It helps alot. :) (twoThumbsUp)

  8. Yes this works...thanks for this mate... keep up the good work

  9. Dude for 1 month i think i fornat my laptop for 7 times to solve this problem...and find any solutions in google but still same...but in this day i find your post and WOW...thanks n keep posting more...

  10. Thank sir...for 1 month i just keep format my laptop blto solve it...i search any possible solution but the result still i found your post n i do it ask you instruct n WOW...thanks again...keep posting more...

  11. From my experience, "svchost.exe" is needed to do the Windows Updates in my Windows 7 machines. They take hours to update after a new install of Win.7 (or a long time without doing regular updates) because of the nature of how Windows 7 does its updates compared to previous versions of Windows. Once the initial Windows updates are complete (which can take 4 hours+), the high CPU and high memory usage issue isn't so bad with subsequent updates as the they are considerably smaller, as long as you keep up with regular updates. I hope this helps those who wonder why "svchost.exe" continues at high cpu levels for so long. Have faith, your CPU will go back to normal after the Windows Update is complete.

  12. Thank you very much for this! My CPU would go up to 100% as soon as I started my computer, and never go down, even with no programm running. I could not do anything properly and was starting to think I would have to buy a new computer with a better CPU. However, with this update, the CPU usage went immediately down. I hope it will last! Thanks again!

  13. Thank you. After 3 weeks of pulling hair out your tip worked. I have 3 more computers to apply fix to.

  14. Thank you. Three more laptops to apply fix to. I have been chasing this for three weeks.

  15. Thank you. I installed Win 7 Pro with SP 1 and had this problem right from the start. Windows update would not find any updates to install but the process sat there consuming close to 100% of one core. After many attempted tweaks I found your post and after installing the update Windows Update finally work properly and installed a further 151 updates. Now, the next day however, it appears to back to the same old issue (svchost.exe consuming 100% of 1 core). Frustrating.

  16. Disabling WU service does alleviate the problem, so I installed KB3138612, but after reboot netsvcs is still using 100% of one CPU. Any suggestions?

  17. Dude, your fix worked like a charm. I spent 2 days trying to find a workaround, installed (or tried to install rather) about a bagillion different standalone updates or 'hotfixes', and this is the only one that worked.

    Thank you!

  18. I was starting to have the same problem this evening after some updates installed recently. This "Fix" worked like a champ and it didnt take too long to find your post here. I wanted to send a very appreciative and heartfelt Thank You!! Its people like you that keep the world running

  19. I was starting to have the same problem this evening after some updates installed recently. This "Fix" worked like a champ and it didnt take too long to find your post here. I wanted to send a very appreciative and heartfelt Thank You!! Its people like you that keep the world running

  20. Thanks a million, pal. It solved my memory hog problem effectively :-)

  21. This Memory Leak on my teacher's Win7 laptop is running Update KB3138612, but is still leaking into the MAXED OUT RAM... :( It turns out there were 3 Critical Updates, it said. Now we're installing them. An easier solution is to: Open Task Manager > Select Processes > Find svchost.exe > Right Click > Set Priority to Low. Hope this helps! XP

  22. I was looking to fix this bug since more than last 6 month. Installed many fixes but this "Fix" worked like a champ. I wanted to send a very appreciative Thank You!! God bless you.


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