Windows 10 2004: Bluetooth and Intel iGPU bugs fixed

[German]Microsoft’s developers have now fixed two known issues with Bluetooth and Intel iGPU support in Windows 10 version 2004. Such systems can now be updated to version 2004.


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The Windows 10 May 2020 Update (Version 2004) was released to the public on May 27, 2020. Since that release, a lot of minor and major bugs in the new Windows 10 version that may affect individual users have been reported. The rollout is done in waves to bring only compatible machines to the new Windows 10 version.  On the Windows 10 version 2004 status page, since the Windows 10 version 2004 release, there has been a list of ten confirmed bugs that Microsoft is investigating. In the meantime, however, a number of bugs have been dealt with in Redmond.

Auf der Windows 10 Version 2004-Statusseite fand sich seit der Freigabe von Windows 10 Version 2004-Freigabe eine Liste mit zehn bestätigten Bugs, die Microsoft untersucht. Inzwischen hat man in Redmond aber eine Reihe Bugs abgearbeitet.

Intel iGPU Support

In the list of known issues, there was an entry about refresh rate issues with Intel iGPU connectors under Windows 10 version 2004 (client only) with the following explanations: 

Variable refresh rate not working as expected on devices with Intel iGPU

Intel and Microsoft have found incompatibility issues when using a monitor with Variable refresh rate (VRR) plugged into an Intel integrated graphics processing unit (iGPU) display adapter and Windows 10, version 2004 (the Windows 10 May 2020 Update). Enabling VRR on affected devices will not enable the VRR for games using Direct X 9.

Certain integrated Intel graphics chips (Intel iGPUs) had compatibility issues that caused problems with the refresh rate of connected monitors. This meant that VRR operation was not possible for games under DirectX 9. Microsoft had therefore set an upgrade lockout for the new Windows 10 on affected devices. Exactly this problem has now been solved with the optional cumulative update KB4568831 for Windows 10 version 2004 (May 2020 Update). Microsoft plans to remove the lock on upgrading to Windows 10 version 2004 for affected clients in mid-August 2020.

Realtek Bluetooth issues

lso on machines with Realtek Bluetooth chips, there were issues after upgrading to Windows 10 version 2004 (May 2020 update), which were mentioned as.


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Difficulty connecting to more than one Bluetooth device

Realtek and Microsoft have found incompatibility issues with certain versions of drivers for Realtek Bluetooth radios and Windows 10, version 2004 (the Windows 10 May 2020 Update). Windows 10 devices with affected Realtek Bluetooth radio drivers might be unable to connect or pair with more than one Bluetooth device at a time after updating.

To avoid issues after an upgrade to Windows 10 version 2004 (May 2020 update), Microsoft had also set an upgrade lockout for affected machines (both Windows 10 clients and Windows Server 2004) with Realtek Bluetooth chips. This problem has now also been corrected with the optional cumulative update KB4568831 for Windows 10 version 2004 (May 2020 Update). Microsoft plans to remove the lock on upgrading to Windows 10 version 2004 for affected clients in mid-August 2020. 

There is still a compatibility problem with Nvidia graphics drivers, which is also described on the status page. Microsoft hopes to solve the problem by mid August 2020 with a successor version of the Nvidia graphics driver version 358.00.  

For both points addressed above, Microsoft advises against upgrading to Windows 10 version 2004, for example by using the Media Creation Tool. With the optional cumulative update KB4568831 further issues (e.g. with network printers, storage spaces drives etc.) have been fixed. The changelog provides information in case of doubt. The content of update KB4568831 will be released in August as a new security update on August 11, 2020. 


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