Cumulative Update KB4493509 Windows 10 v1809 Build 17763.437 - April 9 Win Update

Another KI (known issue) Shawn, 4/12:


April 9, 2019—KB4493509 (OS Build 17763.437)

aide199 said:

Can anyone please help - I've tried to install this update (through Windows Update) a number of times on my laptop and it keeps throwing up the same error:-

2019-04 Cumulative Update for Windows 10 Version 1809 for x64-based Systems (KB4493509) -Error 0x80070026

I've also downloaded the update from the Windows Catalogue and once again it fails on install.

Help!!

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Hi aide199, Welcome to 10F!

You can help us by filling out your system specs.

It seems 0x80070026 usually points to some type of file corruption. You can follow the advice / answer here: Windows 10 1511 Upgrade Error 0X80070026 I know it says 1511 but it doesn't matter what build it is the advice holds for them all.

Tutorials for: SFC , DISM , Win Update Troubleshooter , you may even have to reset updates.

But.

Before you go through all that, If you have a third-party anti-virus program shut it down and stop any services that are associated with it. Then re-try updating to 3509.
I've even seen where users had to uninstall their AV before updating to have the update succeed.

This is the reason I want you to fill. in. your. specs! If you had listed your AV I wouldn't of had to mention this part about the AV.

Googled and found this thread. I noticed performance issues in Skyrim Special Edition today; every 5-10 seconds, I would get a sudden FPS dip. Only thing that changed was KB4493509 being installed. Uninstalled it and everything is fine again.

No Antivirus software or anything installed, just a lot of gaming software running (Launchers, Discord, EVGA Precision, etc).

Lucky for me, I have Win 10 Pro, so I changed the "Improvement" updates to run on a 30 day delay now, instead of a 1 day delay.

I am running an older display driver though (416.94), maybe when I have some free time that I don't feel like spending on gaming, I will update and then try installing the Windows update again.

Cim said:

Just reporting in - I'm not sure what happened here - I installed the latest cumulative update KB4493509 on Tuesday. I had no problems with the install and my machine is running as near perfect as it can. I ran Check Updates tonight (Friday) and the same update reinstalled - only this time a Restart was not required. Puzzled, I restarted to make sure all was well and so far so good - It is just very strange that I now have TWO KB4493509. I only use Windows Defender. The only major change I made was that I turned off IE11 from WIndows Features. So there's my story - I'll update if I find any problems.

W10 64bit. Avira pro.
KB4493509 basically shut me down. Uninstalled. Would then not boot up. Have to switch off computer and then restart - then works. Avira also went off - had to reinstall. Seemed OK. Seemed stable. Now again no boot up - hanging screen, switch off and restart manually - clears. Avira now functioning. Residual effect - no boot up. Windows ran auto diagnostic - couldn't fix. Wits end.

D34DL1N3R said:

Avira has been updated. Everything working fine now with KB4493509 installed. I had to do a manual update to get it, but the installer from their site has also been updated. New version is 15.0.45.1154.

Edit: After recent Avira update, issue described in Cumulative Update KB4493509 Windows 10 v1809 Build 17763.437 - April 9 Windows Update - Page 4 - Windows 10 Forums is back at every restart & logon. Reverting to older image taken before cumulative update 4493509.

as above Avira Pro, uninstall KB 4493509, fails on boot, manual shut down, restart - OK. I did revert to a past restore point but then Windows badgers you to update what is between last restore point and the corrupt updates. I did update (KB 4493509 is no longer updateable) to recover other updates such Adobe security. Now back to square one - no boot, shut down manually, restart - then OK. So either I go back to a March restore point and ignore all updates including x1 critical, or put up with restart x2. Windows diagnostic could not repair either (x3 attempts). Linux anyone?

Vizkos said:

Googled and found this thread. I noticed performance issues in Skyrim Special Edition today; every 5-10 seconds, I would get a sudden FPS dip. Only thing that changed was KB4493509 being installed. Uninstalled it and everything is fine again.

No Antivirus software or anything installed, just a lot of gaming software running (Launchers, Discord, EVGA Precision, etc).

Lucky for me, I have Win 10 Pro, so I changed the "Improvement" updates to run on a 30 day delay now, instead of a 1 day delay.

I am running an older display driver though (416.94), maybe when I have some free time that I don't feel like spending on gaming, I will update and then try installing the Windows update again.

This is peculiar. Please let me know how the performance is after you have updated the nVidia drivers (325.31 WHQL at the moment).

CountMike said:

Is there Avira for Linux ? BTW, Last Mint update to 19.2 totally screwed up my Mint 18.3, so much for Linux myth !!!

Recent official Mint version is 19.1 so you must be a betatester.. it is your decision. Not the same as all win10 involuntary betatesters called "users". Grrr.