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How to fix a black Windows logon screen

Last week one of my servers had an strange issue. After pressing CTRL-ALT-DELETE to log on, the log on window turned almost completely black (as you can see in the screenshot).

black logon screen

Google gave me the answer, but I still have no idea how this could have happened.

All solutions for Windows Update error 80072ee2

As an system administrator, I know how difficult it can be to solve Windows Update errors. This is particularly the case with Windows Update, because Windows Update always returns generic errors. KB-articles will likely not help you, because these articles are written with theoretical knowledge, and are barely based on real-world scenarios.

Unable to open this Internet site when you try to download an attachment in Internet Explorer 8

After I used CCleaner, I was unable to download attachments with Internet Explorer 8 (IE8).
CCleaner normally only deletes unneccessary files and registry keys. However, in this case it seems that CCleaner has cleaned a little bit too much :)
The following error occured when I tried to download a file with Internet Explorer 8:

Unable to download attachment.zip from www.webaddress.com
Unable to open this Internet site. The requested site is either unavailable or cannot be found. Please try again later.

Fix “An OLE registration error occurred” in Windows and Outlook 2007

Since a week, all of a sudden, I had this very strange problem that I could not move email items from the message list pane to a directory in the left pane. I got this error:

“Can’t copy the items. An OLE registration error occurred. The program is not correctly installed. Run Setup again for the program”

The connector rejected an incoming connection because the maximum number of connections has been reached on Exchange 2007

After releasing some false negatives (blocked email on a antispam server, that shouldn’t be marked as spam), I received the following email message from our SCOM server (System Center Operations Manager)