Internet Explorer 10 will not roll back to IE-9. Help!

So, Internet Explorer woes. Let me organize my thoughts so that my issue is as clear as possible to potential readers / kindly helpful members...

Rule 1 obeyed; try to do it yourself / Google is your friend, etcetera, etcetera.

THE ISSUE:

I have (had) IE-10 installed as an update on Windows 7 64 bit Home Premium. Note: the updates themselves have been an issue in the past, though mostly resolved by adherence to Rule 1. For a work application, I require IE-9 (imagine a company - a reputable French Aviation company by the way - basing its technical data reference on an obsolescent browser usable in only one OS?).

The short story;

The system will not roll-back to it upon uninstalling EI-10 and nor it will IE-9 install from a downloaded "IE9-Windows7-x64-enu" installer (from MS, of course). Attempts to install it give me this rather contradictory information in a message box;

Internet Explorer did not finish installing
Internet Explorer 9 is already installed on this system.

So, where is it, then? A search through the folders leads me to "iexplore.exe" in "Program Files (x86)/Internet Explorer", and in "Program Files/Internet Explorer" but these still launch IE-10.

Longer story (ie; more details);

How did I unistall IE-10 is an obvious question I would be asked. Here are the answers.

First, through "Installed Updates". I got this, after the obligatory "Updates are being uninstalled. This may take several minutes" message;

An error has occurred. Not all of the updates were successfully uninstalled.

So, then I attempted to forcibly remove it through the command line, as administrator, with this recommended method;

FORFILES /P %WINDIR%\servicing\Packages /M Microsoft-Windows-InternetExplorer-*10.*.mum /c "cmd /c echo Uninstalling package @fname && start /w pkgmgr /up:@fname /quiet /norestart"

Still no joy. Some echo lines run through the command line saying that the "package" (heheh! Very Linux) is being uninstalled. After this procedure, there was no more Internet Explorer option of any description at all in the Programs Startup list, but the "iexplore.exe" was still in the folders mentioned above. Opening it this way launched IE-10 again, despite it being "uninstalled". What's the joke?

Sooo. I went to "Programs->Turn Windows features on or off", unchecked Internet Explorer 10, and re-ran the command in administrator command line...

FORFILES /P %WINDIR%\servicing\Packages /M Microsoft-Windows-InternetExplorer-*10.*.mum /c "cmd /c echo Uninstalling package @fname && start /w pkgmgr /up:@fname /quiet /norestart"

The same business with "Package removal" echo lines, and upon completion I checked again for "iexplore.exe" and it had gone completely. Good, I thought, and attempted to install "IE9-Windows7-x64-enu". Same contradictory message about it not being installed and it being already installed. What the heck?

Now, I am beginning to think this needs a more brute force approach (and yes, I have rebooted on several occasions during this procedure), and as I have not been a Windows "power user" since Win 95 and before, when I was a dapper-hand at DOS, I am reticent about proceeding from here.

Obviously, IE-9 is NOT installed, but the system is convinced it IS installed. I am thinking Registry here. Should all traces of IE-10 and IE-9 be purged out, and all Internet Explorer folders be manually deleted, so that I can do a fresh install of IE-9?

Help me out here, please. As I said, it is for work, not play.

UsernameIssues said:

After you did the command line FORFILES /P %WINDIR%\servicing\Packages .... stuff, did you restart the computer?

Yes I did, thanks for the reply.

But to be sure, I will do it again.

Back again...

Nope, there is no sign of any Internet Explorer, on the start up list or in the folders as an exe.

Something that might be important information; In the "Turn Windows features on or off", there is only a box for Internet Explorer 10, none for 9. The IE 10 box I have left unchecked, as explained originally.

Thanks. As I previously mentioned, indeed, I did have some update problems a while back, though they seem resolved now. And I had already run the "sfc /scannow" utility, and it stated no integrity violations.

I am attaching the zipped CBS logs here, as requested.

Edit: Okay, the file size exceeded the maximum forum upload size for the type. I have split it into two.

Edit II: Nope, it will not upload. Sorry.

Please post the CheckSUR logs

NoelDP said:

Please post the CheckSUR logs

Here you go. Thanks.

And BTW, when I had the update problems I did a manual reset as per How do I reset Windows Update components?. A couple of those dlls in step 6 were reported as missing, but I was not about to go attempting to retrieve them from download dll, or something (not that stupid), as there must be a better way to fix that problem.

Note: This thread was originally posted in updates section of the forum, as it was my own creeping suspicion, but it was moved here.

The CheckSUR shows a fair number of problems - some of which it managed to fix.
Here's the summary...

Code:

Summary:
Seconds executed: 778
 Found 94 errors
 Fixed 70 errors
  CSI Manifest and S256H Do Not Match Total count: 1
  CSI Missing Component Key Total count: 5
  Fixed: CSI Missing Component Key.  Total count: 5
  CSI Missing Pinned Component Key Total count: 10
  Fixed: CSI Missing Pinned Component Key.  Total count: 10
  CSI Missing Deployment Key Total count: 2
  CSI Corrupt Deployment Keyform Total count: 1
  CSI Corrupt Component Keyform Total count: 2
  CSI Missing Identity Total count: 15
  Fixed: CSI Missing Identity.  Total count: 15
  CSI Corrupt Identity Total count: 10
  Fixed: CSI Corrupt Identity.  Total count: 10
  CSI Mismatched Identity Total count: 1
  CSI Missing C Mark Total count: 18
  Fixed: CSI Missing C Mark.  Total count: 18
  CSI C Mark Deployment Missing Total count: 2
  CSI Located Replacement: Invalid (S256H) Total count: 12
  CSI F Mark Missing Total count: 22
  Fixed: CSI F Mark Missing.  Total count: 22
  CBS Watchlist Package Missing Total count: 1
  CBS Watchlist Component Missing Total count: 14
Unavailable repair files:
 winsxs\manifests\x86_microsoft-windows-thumbnailcache_31bf3856ad364e35_6.1.7600.16385_none_3ef0dc807a7abc55.manifest

Please run the tool again, and post the new log - it'll make it easier to red the remaining problems, and may even fix a few more things.