Microsoft has blocked Windows 10 OS updates for some users who have Avast and AVG anti-virus tools running on their systems.

Some Windows 10 users trying to update to “Build 1909” found that there’s no update to install if they’re running AVG or Avast in the background.

Microsoft blocks Windows 10 upgrades for these Avast and AVG users

AVG Antivirus compatibility with Windows 10 system updates

This Update applies to following versions of AVG Antivirus

AVG Ultimate 19.5 and lower

AVG Internet Security 19.5 and lower

AVG AntiVirus FREE 19.5 and lower

Microsoft Windows 10 Home / Pro / Enterprise / Education – 32 / 64-bit, version 1903 (the May 2019 Update)

As of November 2019, AVG Antivirus program versions 19.5 or lower are no longer compatible with Windows 10, version 1903 (the May 2019 Update).

Here the Guide to Update Your AVG anti-virus for Windows 10 update

Goto AVG official Website for detailed Instruction: AVG Antivirus compatibility with Windows 10 system updates

Avast Antivirus compatibility with Windows 10 system updates

This Avast Antivirus Update applies to the following versions:

Products:

Avast Premium Security 19.5 and lower

Avast Premier 19.5 and lower

Avast Internet Security 19.5 and lower

Avast Free Antivirus 19.5 and lower

Operating systems:

Microsoft Windows 10 Home / Pro / Enterprise / Education – 32 / 64-bit, version 1903 (the May 2019 Update)

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Microsoft has blocked upgrades to both Windows 10 versions 1909 and 1903 for AVG and Avast users running version 19.5.4444.567 or earlier.

To update your Systems to the latest version of Windows 10 1909 users will need to download and install an updated version of Avast or AVG antivirus tools.

This is the first time Microsoft has reported a compatibility block for AVG and Avast. Avast acquired AVG in 2016. Both AVG and Avast have released support pages on the issue.

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Microsoft has also issued a compatibility block on Windows 10 updates for versions 1903, 1909, and 1809, due to a compatibility problem with certain Qualcomm Wi-Fi drivers.

The good news is that updates are available, according to support documents from AVG and Avast. You’ll want to make sure that you’re not on version 19.5 or earlier.