KB5021233

Devices with Windows installations created from custom offline media or custom ISO image might have Microsoft Edge Legacy removed by this update, but not automatically replaced by the new Microsoft Edge. This issue is only encountered when custom offline media or ISO images are created by slipstreaming this update into the image without having first installed the standalone servicing stack update (SSU) released March 29, 2021 or later.

Note Devices that connect directly to Windows Update to receive updates are not affected. This includes devices using Windows Update for Business. Any device connecting to Windows Update should always receive the latest versions of the SSU and latest cumulative update (LCU) without any extra steps. 

To avoid this issue, be sure to first slipstream the SSU released March 29, 2021 or later into the custom offline media or ISO image before slipstreaming the LCU. To do this with the combined SSU and LCU packages now used for Windows 10, version 20H2 and Windows 10, version 2004, you will need to extract the SSU from the combined package. Use the following steps to extract the SSU:

1. Extract the cab from the msu via this command line (using the package for KB5000842 as an example): expand Windows10.0-KB5000842-x64.msu /f:Windows10.0-KB5000842-x64.cab <destination path>

2. Extract the SSU from the previously extracted cab via this command line: expand Windows10.0-KB5000842-x64.cab /f:* <destination path>

3. You will then have the SSU cab, in this example named SSU-19041.903-x64.cab. Slipstream this file into your offline image first, then the LCU.

If you have already encountered this issue by installing the OS using affected custom media, you can mitigate it by directly installing the new Microsoft Edge. If you need to broadly deploy the new Microsoft Edge for business, see Download and deploy Microsoft Edge for business.

After installing this update, apps that use ODBC connections utilizing the Microsoft ODBC SQL Server Driver (sqlsrv32.dll) to access databases might fail to connect. You might receive an error within the app or you might receive an error from SQL Server, such as "The EMS System encountered a problem" with "Message: [Microsoft][ODBC SQL Server Driver] Protocol error in TDS Stream" or "Message: [Microsoft][ODBC SQL Server Driver]Unknown token received from SQL Server".

Note for developers Apps affected by this issue might fail to fetch data, for example when using the SQLFetch function. This issue might occur when calling SQLBindCol function before SQLFetch or calling SQLGetData function after SQLFetch and when a value of 0 (zero) is given for the ‘BufferLength’ argument for fixed datatypes larger then 4 bytes (such as SQL_C_FLOAT).

If you are unsure if you are using any affected apps, open any apps which use a database and then open Command Prompt (select Start then type command prompt and select it) and type the following command:  

tasklist /m sqlsrv32.dll

This issue is addressed in KB5022282.

After installing this update, some Windows devices might start up to an error (0xc000021a) with a blue screen.

Technical note After installing this update, there might be a mismatch between the file versions of hidparse.sys in c:/windows/system32 and c:/windows/system32/drivers (assuming Windows is installed to your C: drive). This might cause signature validation to fail when cleanup occurs.

This issue is addressed in KB5022282. This update should prevent the issue from occurring. Windows devices in which this issue has already occurred will still need to follow the workaround below.

To mitigate this issue on devices already experiencing it, you will need to use Windows Recovery Environment (WinRE) with the following steps:

1. You will need to enter Windows Recovery Environment. If your device has not automatically started up into WinRE, please see Entry points into WinRE.

2. Select the Troubleshoot button.

3. Select the Start recovery, troubleshooting, and diagnostic tools button.

4. Select the Advanced Options button.

5. Select the Command Prompt button and wait for your device to restart, if needed.

6. Your device should restart to a Command Prompt window. You might need to sign into your device with your password before getting to the Command Prompt window.

7. Run the following command xcopy C:\windows\system32\drivers\hidparse.sys C:\windows\system32\hidparse.sys

   (Important If Windows is not installed to C:\windows, you must modify the command for your environment.)

8. Once the previous command completes, type exit

9. Select the Continue button.

10. Windows should now start up as expected.

Important It is not recommended to follow any other workaround than those recommended above. We do not recommend deleting the hidparse.sys from your Windows\System32folder.

We are working on a resolution and will provide an update in an upcoming release.