KB4565503, KB4565627 may block WhatsApp and Slack on PC

Claudiu Andone
by Claudiu Andone
Windows & Software Expert
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  • KB4565503 and KB4565627 may block Electron built apps like Android Messages, Authy Desktop, WhatsApp, Slack, Twitch for Windows 10 v2004.
  • As the issue started manifesting after installing the new KB4565503 and KB4565627, Microsoft didn't react yet with an answer to this problem.
  • If you want to read more about Windows updates, there are more articles in our Windows 10 Updates section.
  • Visit our Patch Tuesday Hub for more information about the latest Windows 10 security updates.
KB4565503, KB4565627 may block WhatsApp and Slack on Windows 10

Microsoft released the latest security patches in the notorious Patch Tuesday event.

And while delivering a lot of fixes including no less than 139 CVEs, the KB’s also came with some known issues but also some unknown ones.

While KB4565483 may conflict with some modems, KB4565503 and KB4565627 may block Electron built apps like Android Messages, Authy Desktop, WhatsApp, Slack, Twitch for Windows 10 v2004.

How do KB4565503 and KB4565627 are blocking apps on Windows 10?

A user complains on Reddit that every time he tries to start Electron built apps, he receives the error message The application was unable to start correctly (0xc0000005). Click OK to close the application.

The issue is showing on his Dell XPS 8500 computer but not on his other Dell OptiPlex 390 MT, the difference being that the latter is running a Release Preview Windows 10 build.

The only difference I can figure between the 2, besides channel, is that the 1st machine uses Known Folder Redirect (KFR) while the 2nd one doesn’t. It seems Windows is not handling the KFR use case very well.

He also specifies that he performed an SFC scan without any results.

How can I fix error code 0xc0000005?

As the issue started manifesting after installing the new KB4565503 and KB4565627, Microsoft didn’t react yet with an answer to this problem.

However, we have previously encountered and fix The application was unable to start correctly (0xc0000005) error.

If you encounter the error code 0xc0000005 after installing the new KB4565503 and KB4565627, you can try to fix the problem with our comprehensive guide.

Tell us about your experience and problems after installing the new KBs in the comments section below so we can try to help you further.

The article KB4565503, KB4565627 may block WhatsApp and Slack on PC appeared first on WindowsReport.com.