Microsoft recently released the Patch Tuesday update KB4549951 (Builds 18363.778 and 18362.778) for Windows 10 version 1903/1909. It followed up KB4549951 with optional update KB4550945 (Builds 18363.815 and 18362.815 for version 1909/1903).
While we had reported about some users facing various issues after installing KB4549951 it seems that there are even more serious issues caused by the update including BSOD, Boot failures, WiFi connectivity issues, and more.
Help to diagnose Kernel Mode Heap Corruption
I have been getting BSOD after watching streams on twitch and even while watching youtube videos sometimes and it happend while I tried to install windows update (KB4549951). This is a PC I bought new 4 months ago. I have been searching for an answer but couldn’t find something useful so I decided to ask you guys.
No more wifi since last windows update
April 21, 2020—KB4550945 (OS Builds 18362.815 and 18363.815): Installed this update and my speakers do not work
Hi. I did the above-mentioned update and my speakers do not work thereafter. Sound is playing but I don’t hear anything. When I plug my headset into my laptop, sound can be heard but the usual dialogue box that opens when I plug in, does not appear. How do I rectify this? Please help.
2020-04 Cumulative Update for Windows 10 Version 1909 for x64-based Systems (KB4550945) – Error 0x800f0986
Windows Defender Firewall is blocking Microsoft services
I noticed that after the latest optional software update for Windows 10, the Windows Defender firewall is blocking Microsoft services: KB4550945
In my case, it is not allowing downloading or logging in on the App Store.
It even blocks logging in to outlook.com via browser.
Turning off Firewall allows me to log in normally and perform app updates via App Store.
Can this be checked please?
Is there any additional information needed?