Note: These solutions work in all versions of IE.
A very common question comes up often in the Microsoft forums:
When
clicking on a hyperlink in an e-mail, I get this Message : "This
operation has been cancelled due to restrictions in effect on this
computer. Please contact your system administrator." I get this message
every time that I attempt to use the hyperlink. I am the administrator
on this stand alone computer. How do I deactivate this feature so that I
activate hyperlinks ?
This is not an Outlook error. The most common cause is a corrupt registry key in Internet Explorer. The registry key found at
HKEY_Local_Machine\Software\Classes\htmlfile\shell\open\command |
is either damaged or corrupt.
To
fix it, try resetting Web settings in Internet Explorer. If this does
not resolve the issue, set IE as the default browser following the steps
in
Set Program Access in Control Panel. If you use a different browser as your default, you need to set IE as the default until you verify the links work in Outlook.
If you uninstalled Chrome (or Firefox) and then received the error, see
Edit Registry, Part 2
In
addition to Chrome and Firefox, Maxthon and other HTML rendering and
editing programs may take the HTML open command and cause this error.
Greg reports UltraEdit is one such program. See
Edit Registry, Part 2 for the fix.
You can find solutions suggested by others users
below. Many users report successfully using Alan's suggestion
here. If you are using Outlook 2010, see
tgrf's suggestion to change your Junk email settings. It's quick to try and won't be a waste time if it doesn't fix your problem.
Reset Web Settings
To Reset Web settings in Windows XP:
- Close Outlook
- Open Internet Explorer.
- On the Tools menu, click Internet Options.
- Click the Advanced tab, and then click the Reset button.
- Under Internet programs, verify that the correct e-mail program is selected.
- Click to select the Internet Explorer should check to see whether it is the default browser check box.
- Click Apply, and then click OK.
If
you receive a message when Internet Explorer starts telling you that IE
is not currently your default browser, click Yes to make it your
default.
If you are using Windows 7 or Vista:
- Close Outlook
- Open Internet Explorer.
- On the Tools menu, click Internet Options.
- Click the Advanced tab, and then click the Reset button.
- On
the Programs tab, under Internet programs, click Set Programs, then
"Set your Default Programs", select your e-mail program and click "Set
this program as Default". Repeat for Internet Explorer.
- Click OK and close the dialogs.
Note:
You need to set Internet Explorer as default and verify the problem is
fixed. If you prefer a different browser, you can set it as default
later.
Import a Registry Key
When
resetting the web settings doesn't help, you'll need to recreate the
corrupt key. The easiest way to do this is by exporting the key from
another computer. To save exporting it from another computer, download
this registry key exported from my computer. Right click on the link and choose
Save target as then double click on it to run it.
If you prefer to use a key from a computer you have access to, follow these instructions to export the registry key:
- Press Windows key + R to open the Run command
- In the Open box, type regedit, and then click OK.
- Browse to the following registry key:
HKEY_Local_Machine\Software\Classes\htmlfile\shell\open\command
- On the File menu select Export.
- Type in a filename and Save.
- Close the Registry Editor.
Copy the *.reg file to the other computer and double-click on the .reg file. Ok the dialogs to update the registry.
These instructions are the same as found in the Microsoft article
You receive an error message when you click a hyperlink in Outlook (MSKB 310049). Note that the FixIt in this KB articles
will not work with Windows 8. Use the
this reg file instead.
You need to restart Windows for the change to take effect.
Edit Registry, Part 2
If
you received this error after uninstalling any application that takes
over the HTML open command (including, but not limited to, Chrome &
Firefox browsers) you may also need to change the HTM/HTML association
in the registry.
- Start, click Run, type Regedit in the Open box, and then click OK.
- Browse to HKEY_CURRENT_USER\Software\Classes\.html
- Right click the value for the .html key and select Modify…
- Change the value from "ChromeHTML" to "htmlfile" (or from FireFoxHTML to htmlfile)
Repeat
these steps for htm and .shtml keys if they exist. You may also want to
check the xhtml and xhtm keys. Don't want to edit the registry?
Download this
file (right click and choose Save target as…) Then double click on the file to run. From
After uninstalling Google Chrome Links in e-mail don't work any more
You need to restart Windows for the change to take effect.
Set Program Access in Control Panel
Windows
XP and Vista allow you to control program defaults through Control
Panel. If the above methods fail, use this method to set the default
browser. In Windows XP, go to Add and Remove Programs, Set Program
Access and Defaults. In "Choose a default web browser", check on the
"Internet Explorer" option and click the OK button. In Vista, access the
Default Programs applet from the Start menu or Control panel. Click on
the "Set program access and computer defaults" (last option) then expand
Custom. In "Choose a default web browser", check on the "Internet
Explorer" option and click the OK button.
Users Solutions
tgrf makes this suggestion as one possible cause and solution:
I
am using Outlook in Office 2010, Windows 7, and IE8. I just fixed this
problem when trying to set up my junk mail filter. Click on any email
header. Select Junk mail menu, then Junk mail options. Clear the check
mark at Disable links and other functionality in phishing messages.
I
can't vouch for this solution (as I haven't experienced the
restrictions error with Outlook 2010) but its painless and easy to try.
Links are disabled by default for all users. The restrictions error is
typically caused by browser settings.
Alan's Solution
Alan has this suggestion:
I
found that re-installing Google Chrome or FireFox and setting it as the
default, the hyperlinks worked. I then went to Internet Explorer and
set it as the default browser. I again checked the hyperlinks, and again
they worked. I then un-installed Google Chrome and have had no problems
since. Hopefully this will work for others as well.
While
I haven't tested Alan's solution, logic tells me it will work. Possibly
the most common cause is because users uninstall Firefox or Chrome
while either is set as default and setting IE as default before
uninstalling would prevent the problem. If Alan's solution doesn't work,
make sure Chrome is not running when you set IE as the default browser.
http://www.slipstick.com/problems/this-operation-has-been-cancelled-due-to-restrictions/
Warning: 
Note: 
