Windows 11: list of known issues and resolved issues
Microsoft released its Windows 11 operating system in early October 2021 to the public. The operating system is rolled out gradually Windows Update to compatible Windows 10 devices as a free update, but administrators need to allow the upgrade before it is installed.
Windows 11 is also available on new PCs and as a standalone download and new installation or upgrade.
Windows 11 has known issues that Microsoft confirmed. The current count of known issues is 3, the count of resolved issues is 0.
Note: not all issues may have been confirmed by Microsoft officially. The recently disclosed AMD performance issue on Windows 11 has not been confirmed officially by Microsoft yet.
Windows 11: known issues
Issue 002: Compatibility issues have been found between Oracle VirtualBox and Windows 11
Virtual Machines may fail to start or other errors may be thrown when Virtual Machines are started on Windows 11. An incompatibility was discovered between Windows 11 and Oracle's VirtualBox virtualization software. Microsoft put an upgrade block on devices with VirtualBox installed.
Workaround: uninstall Hyper-V or Hypervisor from Windows until the issue is resolved.
Resolution: expected to be released in October 2021.
Windows 11: resolved issues
Issue 001: Compatibility issues with Intel “Killer” and "SmartByte" networking software
Microsoft confirmed compatibility issues between Intel networking software, "Killer and "SmartByte", and the company's Windows 11 operating system.
UDP packets may be dropped on devices affected by the issue as a consequence "under certain conditions". Microsoft notes that users may experience that webpages load slower than usually, and that other Internet services, including video streaming services and VPN services, may also be slower than expected.
Resolution: released on the October 2021 Patch Tuesday (October 12, 2021)
Issue 003: Compatibility issues with apps using some non-ASCII characters in their registry keys
Applications that use certain non-ASCII characters in the Registry may not start or may cause other issues on Windows 11 devices. Errors may result in a bluescreen.
Resolution: Resolved in in KB5006746.
Issue 004: Installation of printers via Internet Printing Protocol (IPP) might not succeed
Microsoft is investigating an issue that is causing the installation of IPP, Internet Printing Protocol printers, to "not complete successfully". The company notes that IPP printers are usually found in organizations and not home environments.
Issue 005: Custom printing properties might not be correctly provided to print server clients
The issue affects the print server and client communication, and results in clients printing using defaults and not using server provided preferences.
The issue affects print servers only, not standard network printing.
This issue results from an improper building of the data file which contains the printer properties. Clients which receive this data file will not be able to use the file content and will instead proceed with default printing settings. Servers which use default print settings and have no custom settings to provide to clients are unaffected.
Workaround: Either configure clients manually to use the desired printing configuration or install print drivers on the client directly.
Issue 006: Installation of printers might fail when attempted over some network connections
Devices that connect to a network printer for the first time may fail to download and install printer drivers. The issue occurs with print servers only.
Workaround: Manual installation of printer drivers on the clients. Only the automated downloading and installing of printer drivers is affected.
Issue 007: Some applications on devices that have AMD Ryzen processors might drop performance
Microsoft and AMD have released updates that address performance issues of devices with AMD processors that run Windows 11.
Devices with AMD Ryzen processors might experience latency in the L3 cache after upgrading to Windows 11. Some applications sensitive to memory subsystems performance access time might be affected, including diagnostic and benchmarking applications and certain gaming applications.
Issue 008: Receiving a prompt for administrative credentials every time you attempt to print
Windows may display a prompt to enter administrative credentials if the print server and print client are in different time zones.