Windows users have been experiencing performance problems, boot failures, and receiving BitLocker Recovery prompts since installing the KB5012170 security update.<\/p>\n
According to Bleeping Computer<\/a><\/strong>, Microsoft released the update to correct vulnerabilities in various UEFI bootloaders that malicious actors could use\u00a0to bypass Secure Boot and execute unsigned code<\/a><\/strong>.<\/p>\n The KB5012170 update fails on devices without valid bootloaders, which Bleeping Computers says is a good thing, as these devices would no longer boot if the update were successful.<\/p>\n However, devices with valid bootloaders have been experiencing various issues, with around 2% of Windows 11 devices showing BitLocker recovery screens after installing the update.<\/p>\n Users who experience this issue can find their recovery keys by signing into their Microsoft account on another device and going to the BitLocker recovery key page<\/a><\/strong>.<\/p>\n Bleeping Computer added that some of its readers had reported slow boot times and altered disk configurations after installing the update.<\/p>\n “I have Windows 10 21H1 and after I downloaded the update last week I noticed the boot time change to VERY long,” BleepingComputer quoted a reader as saying.<\/p>\n “Can confirm that. What’s worse, the update changed my RAID mode to AHCI, so I had to manually put that back on approx 10 devices, that ran into BSOD,” another reader commented.<\/p>\n “All of them. Almost brand new Latitudes 5320 and all behaved the same. You can see, if the update changed your RAID mode too,” the reader added.<\/p>\n Fortunately, it appears that the issue resolves itself after users enter the BitLocker recovery key and modify their disk configurations.<\/p>\n Microsoft had previously warned<\/a><\/strong> Windows users that the update might not install on some devices.<\/p>\n “When attempting to install KB5012170, it might fail to install, and you might receive an error 0x800f0922,” Microsoft said.<\/p>\n “This issue can be mitigated on some devices by updating the UEFI bios to the latest version before attempting to install KB5012170.”<\/p>\n The ox8oof0922 error is the same as what appears when attempting to install the update on a device without a valid bootloader.<\/p>\n A Windows security update to fix a UEFI bootloader vulnerability causes various new issues.<\/p>\n","protected":false},"author":341076,"featured_media":418576,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[27],"tags":[80673,77988,807,70233,80675],"class_list":["post-456869","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-security","tag-bitlocker-recovery","tag-unified-extensible-firmware-interface-uefi","tag-windows","tag-windows-11","tag-windows-security-update"],"_links":{"self":[{"href":"https:\/\/mybroadband.co.za\/news\/wp-json\/wp\/v2\/posts\/456869"}],"collection":[{"href":"https:\/\/mybroadband.co.za\/news\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mybroadband.co.za\/news\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mybroadband.co.za\/news\/wp-json\/wp\/v2\/users\/341076"}],"replies":[{"embeddable":true,"href":"https:\/\/mybroadband.co.za\/news\/wp-json\/wp\/v2\/comments?post=456869"}],"version-history":[{"count":1,"href":"https:\/\/mybroadband.co.za\/news\/wp-json\/wp\/v2\/posts\/456869\/revisions"}],"predecessor-version":[{"id":456883,"href":"https:\/\/mybroadband.co.za\/news\/wp-json\/wp\/v2\/posts\/456869\/revisions\/456883"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/mybroadband.co.za\/news\/wp-json\/wp\/v2\/media\/418576"}],"wp:attachment":[{"href":"https:\/\/mybroadband.co.za\/news\/wp-json\/wp\/v2\/media?parent=456869"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mybroadband.co.za\/news\/wp-json\/wp\/v2\/categories?post=456869"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mybroadband.co.za\/news\/wp-json\/wp\/v2\/tags?post=456869"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
\nNow read: Zoom for Mac patches critical security flaw<\/a><\/h3>\n","protected":false},"excerpt":{"rendered":"