https://malwaretips.com/threads/avira-now-freezing-windows-at-boot-with-100-cpu-ram-usage.127600/
A recent update for Avira antivirus software for Windows seems to have a negative impact on system stabilization for some users. For a couple of days, Avira users have reported issues with the antivirus software on their Windows machines.
Most users report freezes on startup. One user, who reported the issue on the Avira forum on Reddit described the issue in the following way: “Today, my PC suddenly started to freeze on startup. I tried disabling all background apps until only Avira was left. 2 other people I know had the same issue (both have Avira). Fixed it by going into safe startup and uninstalling Avira.”
Other users chimed in and reported similar issues with Avira. German publisher Heise suggests that the Friday update for Avira products has caused the issue on Windows. The issue affects Windows 10 and Windows 11 according to Heise’s report. For some users, windows PCs are usable for about two to three minutes before they lock up completely and can’t be used anymore. Other users mention freezes during startup so that they can’t log on at all on the system.
Affected users resolved the issue by uninstalling Avira from their PCs. It is unclear if this is the only solution to the issue, or if there is a less drastic option. Deactivation of a single component might also lead to restoration of system stability, but this has not been confirmed up until now…
Both affected Windows operating systems will enable Microsoft Defender automatically if no other antivirus solution is found on the system…
