Microsoft has said that Windows 10 will start removing installed Windows Updates that cause problems in starting or running your device at peak efficiency. Windows Updates which fail dues to software incompatibilities will get automatically uninstalled.
After your computer has recovered from a startup failure, you may see this notification in the bottom right corner of your computer screen:
We removed some recently installed updates to recover your device from a startup failure.
When Windows detects that this is happening, it will resolve this issue by attempting to uninstall the problematic update.
Once the update has been uninstalled, Windows 10 will also prevent such problematic updates from re-installing automatically for the next 30 days – after which, it will again try to automatically install the update.
This 30-day period will give Microsoft and its partners the opportunity to investigate the failure and fix the updates, says KB4492307.
Now even after fixing such updates, if your PC is unable to function properly after the reinstallation of these updates, Windows 10 will uninstall them again.
I hope this explains why you may have seen this notification.