Bruinator Posted December 15, 2018 Share Posted December 15, 2018 Hi Guys, I am trying to install windows 10 version 1809 update and I keep on getting this error of 0xc1420121. I turned off KIS2019 and malwarebytes. What am I doing wrong, plz? Thx Link to comment Share on other sites More sharing options...
Joe User Posted December 15, 2018 Share Posted December 15, 2018 I think that's a failure to mount or unmount an image, which usually says antivirus is interfering, but other programs can cause that. Is there anything running in the background that might hold files open? Are you using Windows Update, have you tried using the update assistant? Link to comment Share on other sites More sharing options...
Bruinator Posted December 15, 2018 Author Share Posted December 15, 2018 (edited) 25 minutes ago, Joe User said: I think that's a failure to mount or unmount an image, which usually says antivirus is interfering, but other programs can cause that. Is there anything running in the background that might hold files open? Are you using Windows Update, have you tried using the update assistant? Not sure anything in the background is interfering with it. I turned off my KIS 2019 and malwarebytes, Do they both need to be uninstalled before updating? yes, i have tried the assistant. Link to comment Share on other sites More sharing options...
Joe User Posted December 15, 2018 Share Posted December 15, 2018 2 minutes ago, Bruinator said: Not sure anything in the background is interfering with it. I turned off my KIS 2019 and malwarebytes, Do they both need to be uninstalled before updating? yes, i have tried the assistant. I upgraded with MBytes, so I don't think that's an issue. You could try uninstalling Kaspersky and see if it helps. Unfortunately this is a tricky one to diagnose, the next step would be to check Windows for corrupted files. Bruinator 1 Share Link to comment Share on other sites More sharing options...
Bruinator Posted December 15, 2018 Author Share Posted December 15, 2018 Would windows repair tool help and then run the update? Link to comment Share on other sites More sharing options...
Nick H. Supervisor Posted December 15, 2018 Supervisor Share Posted December 15, 2018 1 minute ago, Bruinator said: Would windows repair tool help and then run the update? Open the command prompt and type "sfc /scannow" just to be sure. Xenon, Jose_49, Barney T. and 2 others 5 Share Link to comment Share on other sites More sharing options...
Joe User Posted December 15, 2018 Share Posted December 15, 2018 (edited) 7 minutes ago, Bruinator said: Would windows repair tool help and then run the update? I usually go with sfc /scannow next (as Nick pointed out). I tend to uninstall things like antivirus first just because they're the most likely culprit, but that's just personal preference. Bruinator and Jose_49 2 Share Link to comment Share on other sites More sharing options...
Bruinator Posted December 15, 2018 Author Share Posted December 15, 2018 sfc /scannow can you take a ballpark quess on the long this will run? Thx Link to comment Share on other sites More sharing options...
Joe User Posted December 15, 2018 Share Posted December 15, 2018 1 minute ago, Bruinator said: sfc /scannow can you take a ballpark quess on the long this will run? Thx I have not done it in years and it's very disk dependent, so could be a while (about an hour) if you have a slow hard drive. Link to comment Share on other sites More sharing options...
Bruinator Posted December 15, 2018 Author Share Posted December 15, 2018 I have an intel I5 so i hope it doesnt take more than an HR. Link to comment Share on other sites More sharing options...
Nick H. Supervisor Posted December 15, 2018 Supervisor Share Posted December 15, 2018 12 minutes ago, Bruinator said: sfc /scannow can you take a ballpark quess on the long this will run? Thx It really depends, but I've not had it run for longer than around 20 minutes before it has finished. Link to comment Share on other sites More sharing options...
Bruinator Posted December 15, 2018 Author Share Posted December 15, 2018 (edited) Can i run it using windows powershell (admin) ? thx Link to comment Share on other sites More sharing options...
Nick H. Supervisor Posted December 15, 2018 Supervisor Share Posted December 15, 2018 1 minute ago, Bruinator said: Can i run it using windows powershell (admin) ? thx Yep. Link to comment Share on other sites More sharing options...
Bruinator Posted December 15, 2018 Author Share Posted December 15, 2018 (edited) It came back saying Windows Resource Protection did not find any integrity violations. What should i try next windows repair tool? Or uninstall kis 1019 and malwarebytes? thx Link to comment Share on other sites More sharing options...
Nick H. Supervisor Posted December 15, 2018 Supervisor Share Posted December 15, 2018 Do you have a backup of the OS available? Something to keep your files while rolling back the OS version? Otherwise I would sit and wait it out. If you don't get the latest version by next month then consider revisiting the situation. It's good to be on the latest version but not necessarily crucial. Link to comment Share on other sites More sharing options...
Bruinator Posted December 15, 2018 Author Share Posted December 15, 2018 9 minutes ago, Nick H. said: Do you have a backup of the OS available? Something to keep your files while rolling back the OS version? Otherwise I would sit and wait it out. If you don't get the latest version by next month then consider revisiting the situation. It's good to be on the latest version but not necessarily crucial. yes, I have an image of it using acronis TI 2019. Link to comment Share on other sites More sharing options...
Nick H. Supervisor Posted December 15, 2018 Supervisor Share Posted December 15, 2018 2 hours ago, Bruinator said: yes, I have an image of it using acronis TI 2019. So go for the backup, try the update then. Link to comment Share on other sites More sharing options...
Jose_49 Posted December 15, 2018 Share Posted December 15, 2018 5 hours ago, Bruinator said: I have an intel I5 so i hope it doesnt take more than an HR. Unfortunately(?) that's entirely dependent on the hard drive. The i5 won't help much in this case... Link to comment Share on other sites More sharing options...
Marujan Posted December 15, 2018 Share Posted December 15, 2018 (edited) 1)backup all files 2)download ISO 3)format c disk and NEW install 4)use your key to activate 5)make WinUPDATE 6)restore folders back https://twitter.com/Ratiborus58 Link to comment Share on other sites More sharing options...
ThaCrip Posted December 16, 2018 Share Posted December 16, 2018 You can try using ISO to upgrade as you can use the official MS tool to download the ISO and right click and mount it and then upgrade that way as that's typically the way I do my upgrades from one major Windows 10 version to another. worst case... backup your data and clean install using the ISO as Windows 10 should automatically activate once online. Link to comment Share on other sites More sharing options...
Recommended Posts