I’m back with another strange error probably caused by an interrupted installation of Microsoft Visio 2010.

So, while uninstalling Microsoft Visual Studio 2010 Ultimate RC on Windows 7 Enterprise the following error appears:
---------------------------
Microsoft Visual Studio 2010 Ultimate RC Setup
---------------------------
Error 1402.Could not open key: UNKNOWN\Components\72CC1F6E4CA6F4A4F8B68FD11DB44E14\4848F1E21D219AC3A8BD8C2FAA4300B4. Verify that you have sufficient access to that key, or contact your support personnel.

By error number looks like a registry permission error, investigation at Microsoft didn’t helped me much.
Repair/reinstall failed, so, don’t bother.

After reading a few pages I end up restoring permissions on registry keys using the methods from this page.

After changing permissions for these keys:
8EEF86DD963C1D111A37000A9CA05BF0
68D4BEEE50F999F45A35B6ABBE7E7E0D
1165D2FB630CB174699B857E4C6F9CD7
BA32B1FDF3481944B907A0A07D8FD197
1A01EC3CAB255B145AA0011CA52426E0
5E93D71C1C924E940A3A3ACF1453FA71
B924160F488F4D143B89478C920459E4
C52BBB7D63AE3824BA2A75A9B7BA309F
72CC1F6E4CA6F4A4F8B68FD11DB44E14
I have changed the permissions for the whole Components subtree.

Uninstall was easy, only after.
HTH

Suddenly this error appeared: “A problem is preventing Window from accurately checking the license for this computer. Error Code : 0×80090006″.

I have no idea why.

According to others what you can do one the followin:

• Log into safe mode and re-register a couple of dlls:
  regsvr32 regwizc.dll
  regsvr32 licdll.dll
• Fix C drive association by using regedit32:
  See KB914232
• Reinstall or repair.

For only the third worked.

You can backup files by using Safe mode.

Remember,  backup your data often.

Later edit:

You should verify your XP license or for viruses/rootkits or, more general, malware.
You can see here how much increased the number of searches for 0×80090006 in February: Link to google insight.

What should be next?

Sadly but I don’t have a computer at home, occasionally, I read news or I write posts like this on an old Tecra A3: 512MB RAM, super slow HDD, intel 915GM video card and extra large resolution 1400×1050.
I’ve been using Firefox for ages, but after I read a post about using IE8 instead of Firefox 3.5.x+AdBlock Plus I was curious about the results.

I went home and I have installed IE8.
And, it’s true.
IE8 on old computers is faster than firefox.
I have enough free memory for my tabs, no more than ten.

On the computer at work I have about 60 tabs open, anytime, I didn’t felt like I have a problem, slow computer, not enough memory.
But, on this one, old one, IE8 is faster.

So, Firefox you lost this battle on old computers.
Sorry. Moved to IE8.

And another thing, there are no adblock features comming with IE8, but you can install a local proxy to filter your web traffic like I did, BFilter.

I don’t own a new computer so I have to use an old tecra A3 with an old HDD but a very good screen 15″ with a huge resolution: 1400×1050.

Because the hard drive is so slow Adobe Reader 9 starts in several seconds after I double click the pdf file.
So, if you have to read docs this a little bit annoying to have to wait a lot just to start Adobe.
After Reader is loaded the pdf file is loaded quite faster…

So I have googled a bit and I have found a few software apps to speed up adobe reader at start up.
But. Why to install another piece of software when you can do it yourself?!?

Here is how if you only want to read docs, no search, no other stuff:

Go to C:\Program Files\Adobe\Reader 9.0\Reader\ and create a directory “old” or “backup”.
Move the following directories in it: plug_ins, plug_ins3d and SPPlugins.

Start Adobe Reader. How is it? Mine it starts in lass than a second.

Here is how if you want to read docs and you want “Comment and markup” toolbar to be available:
Move all plugin dirs as you read before, but, keep in the plug_ins dir the following files:
AcroForm.api
AcroSign.prc
Annots.api
EScript.api
IA32.api
Search.api
Search5.api
weblink.api

Start Adobe Reader, read your books, educate yourself.

HTH and enjoy.

Later edit:
You can use PDF-XChange Viewer to view, markup text or add comments to your pdf files.