Microsoft confirms Windows 10 cumulative update KB4557957 breaks printer port


Microsoft says the latest patch KB4557957 for fixing May 2020 bugs breaks printer port

Microsoft launched its major Windows 10 Update 2004 with May 2020 patch, which was almost after a half a year from the last major update in November 2019. The users, however, faced a major bug with the update that forced systems to restart automatically. The company after a month of launching the update fixed the issue and released it over June 2020 patch on June 9. As we saw earlier, the update fixed the May 2020 bug but had a new bug that breaks USB printer port after disconnecting printer while shutting down Windows 10.

The issue also exists in Windows 10 cumulative update KB4557957, which is the first such update for Windows 10 version 2004 (May 2020 Update). Microsoft says that after installing these updates, printers could no longer work, and the same bug also affects PDF printers.

After installing this update, certain printers might fail to print. The print spooler might throw an error or close unexpectedly when attempting to print, and no output will come from the affected printer. You might also encounter issues with the apps you are attempting to print from. You might receive an error from the app or the app might close unexpectedly.


According to Microsoft, the bug appears to be present in all the Windows 10 latest updates-June 9, 2020—KB4557957 (OS Build 19041.329), June 9, 2020—KB4560960 (OS Builds 18362.900 and 18363.900) and June 9, 2020—KB4561608 (OS Build 17763.1282).

The company said that there’s no workaround to restore printers on a device where the bug occurs, the developers are working on the fix and will soon release the fix as soon as available. But according to some reports on popular forums we got to know that all printers are not affected by the bug. Microsoft hasn’t released a list of affected printers so it is better not to update the latest cumulative update KB4557957 update until a fix is available.

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