Feeds

Prevx blames Microsoft for black hawk screen down

Patches bestow chocolate teapot status on Windows PCs

Providing a secure and efficient Helpdesk

Microsoft’s most recent release of security patches is causing some computers to freeze and display a, er, black screen of death.

The glitch is affecting Windows 7, Vista and XP operating systems, according to software security firm Prevx.

The UK-based company warned its users on Friday that Microsoft’s latest patches were causing havoc for some Windows fans.

According to a blog post by Prevx late last week, Redmond tweaked the Access Control List (ACL), which among other things details individual object permissions for a logged-on user within the Windows file system.

Microsoft’s latest modification to ACL registry keys have rendered some installed apps as useless, by preventing them from running and causing a black screen to appear.

Prevx noted that security apps were particularly badly affected by the patches, and added that some users of Prevx’s products had attempted to reinstall their operating system in a desperate effort to resolve the problem.

Prevx has already spun out a fix for users affected by the problem that automatically matches its software to the registry tweak in order to align with the ACL settings.

"I must stress that this tool will not fix all black screen issues," said Prevx support wonk Dave Kennerley.

"There can be many causes. But if your black screen woes began in the last two weeks after a Windows update or after running any security program (including Prevx) to remove malware during this time then this fix will have a high probability of working."

Kennerley added that Microsoft had failed to adequately alert the developer community about the rule changes it had made to the ACL with its latest patch batch, which was released on 10 November. ®

Providing a secure and efficient Helpdesk

More from The Register

next story
Not appy with your Chromebook? Well now it can run Android apps
Google offers beta of tricky OS-inside-OS tech
Greater dev access to iOS 8 will put us AT RISK from HACKERS
Knocking holes in Apple's walled garden could backfire, says securo-chap
NHS grows a NoSQL backbone and rips out its Oracle Spine
Open source? In the government? Ha ha! What, wait ...?
Google extends app refund window to two hours
You now have 120 minutes to finish that game instead of 15
Intel: Hey, enterprises, drop everything and DO HADOOP
Big Data analytics projected to run on more servers than any other app
prev story

Whitepapers

Providing a secure and efficient Helpdesk
A single remote control platform for user support is be key to providing an efficient helpdesk. Retain full control over the way in which screen and keystroke data is transmitted.
Top 5 reasons to deploy VMware with Tegile
Data demand and the rise of virtualization is challenging IT teams to deliver storage performance, scalability and capacity that can keep up, while maximizing efficiency.
Reg Reader Research: SaaS based Email and Office Productivity Tools
Read this Reg reader report which provides advice and guidance for SMBs towards the use of SaaS based email and Office productivity tools.
Security for virtualized datacentres
Legacy security solutions are inefficient due to the architectural differences between physical and virtual environments.
Secure remote control for conventional and virtual desktops
Balancing user privacy and privileged access, in accordance with compliance frameworks and legislation. Evaluating any potential remote control choice.