I upgraded to outlook 2007 and when I hit reply on an email I get this 
message, The Add-in "FaxExtension" (C:\WINDOWS\system32\fxsext32.dll) cannot 
be loaded and has been disabled by Outlook.  Please contact the Add-in 
manufacturer for an update .  If no update is available, please uninstall the 
Add-in.    OK



I went in the trust center to uninstall the add-in but faxextension does not 
appear.  How can i fix this.

sotavento524  wrote:

> I upgraded to outlook 2007 and when I hit reply on an email I get this
> message, The Add-in "FaxExtension" (C:\WINDOWS\system32\fxsext32.dll)
> cannot be loaded and has been disabled by Outlook.  Please contact
> the Add-in manufacturer for an update .  If no update is available,
> please uninstall the Add-in.    OK

Search your Windows user profile for a file named extend.dat and delete it. 
Then start Outlook.  The file will be in a hidden folder, so be sure to 
enable viewing hidden files and folders.
-- 
Brian Tillman

Thanks for the answer but no extend.dat file found.
Sotavento524

"Brian Tillman" wrote:

> sotavento524  wrote:
> 
> > I upgraded to outlook 2007 and when I hit reply on an email I get this
> > message, The Add-in "FaxExtension" (C:\WINDOWS\system32\fxsext32.dll)
> > cannot be loaded and has been disabled by Outlook.  Please contact
> > the Add-in manufacturer for an update .  If no update is available,
> > please uninstall the Add-in.    OK
> 
> Search your Windows user profile for a file named extend.dat and delete it. 
> Then start Outlook.  The file will be in a hidden folder, so be sure to 
> enable viewing hidden files and folders.
> -- 
> Brian Tillman 
> 
>

sotavento524, you  wrote on Wed, 28 Feb 2007 13:10:18 -0800: 

> Thanks for the answer but no extend.dat file found.

The file X in that are the registry informations of installed add-ins
are cached X is stored in

C:\Documents and Settings\%Username%\Local Settings\Application
Datas\Microsoft\Outlook

The folder ...\Local Settings is a hidden folder by default, so you have
to set the option that also hidden files and folders will be shown:

Control Panel | Folderoptions | View

If deleting the extend.dat does not help to get rid of the error
message, see if in one of the registry keys below the entry of this
add-in still appears. If so, delete it!

HKEY_CURRENT_USER\Software\Microsoft\Office\Outlook\Addins

HKEY_LOCAL_MACHINE\Software\Microsoft\Office\Outlook\Addins

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Exchange\Client\Extensions


-- 
Best Regards
Christian Goeller
http://www.outlookfaq.net

sotavento524  wrote:

> Thanks for the answer but no extend.dat file found.

Did you enable viewing hidden files and folders?  For Windows XP, look in
%UserProfile%\Local Settings\Application Data\Microsoft\Outlook.  Vista has 
a similar path, but I don't yet have it memorized.
-- 
Brian Tillman

<drive>:\Users\%UserProfile%\AppData\Local\Microsoft\Outlook

-- 
Russ Valentine
[MVP-Outlook]
"Brian Tillman"  wrote in message 
news:eKh1NLAXHHA.1016@TK2MSFTNGP04.phx.gbl...
> sotavento524  wrote:
>
>> Thanks for the answer but no extend.dat file found.
>
> Did you enable viewing hidden files and folders?  For Windows XP, look in
> %UserProfile%\Local Settings\Application Data\Microsoft\Outlook.  Vista 
> has a similar path, but I don't yet have it memorized.
> -- 
> Brian Tillman

I am having this identical problem, except it only occurs for me when I try 
new message (not on reply) and it only happens once on each opening of 
Outlook. I'm told it may be fixed by running detect and repair, but this was 
information for XP and not for Vista. I think this is a problem with Vista 
and not with Outlook. Any thoughts?

"Russ Valentine [MVP-Outlook]" wrote:

> <drive>:\Users\%UserProfile%\AppData\Local\Microsoft\Outlook
> 
> -- 
> Russ Valentine
> [MVP-Outlook]
> "Brian Tillman"  wrote in message 
> news:eKh1NLAXHHA.1016@TK2MSFTNGP04.phx.gbl...
> > sotavento524  wrote:
> >
> >> Thanks for the answer but no extend.dat file found.
> >
> > Did you enable viewing hidden files and folders?  For Windows XP, look in
> > %UserProfile%\Local Settings\Application Data\Microsoft\Outlook.  Vista 
> > has a similar path, but I don't yet have it memorized.
> > -- 
> > Brian Tillman 
>

I've seen several similar reports, but we've not had any steps to repro the 
problem and can't tell whether this is an Outlook or Vista problem. What 
were the steps that produced the error for you (including how you installed 
your OS and how you installed Office, including its version). Did you try 
the solution in this thread? It's the most logical place to start.
-- 
Russ Valentine
[MVP-Outlook]
"jw1941"  wrote in message 
news:3B948D45-659F-4337-8A41-4068C3CCB728@microsoft.com...
>I am having this identical problem, except it only occurs for me when I try
> new message (not on reply) and it only happens once on each opening of
> Outlook. I'm told it may be fixed by running detect and repair, but this 
> was
> information for XP and not for Vista. I think this is a problem with Vista
> and not with Outlook. Any thoughts?
>
> "Russ Valentine [MVP-Outlook]" wrote:
>
>> <drive>:\Users\%UserProfile%\AppData\Local\Microsoft\Outlook
>>
>> -- 
>> Russ Valentine
>> [MVP-Outlook]
>> "Brian Tillman"  wrote in message
>> news:eKh1NLAXHHA.1016@TK2MSFTNGP04.phx.gbl...
>> > sotavento524  wrote:
>> >
>> >> Thanks for the answer but no extend.dat file found.
>> >
>> > Did you enable viewing hidden files and folders?  For Windows XP, look 
>> > in
>> > %UserProfile%\Local Settings\Application Data\Microsoft\Outlook.  Vista
>> > has a similar path, but I don't yet have it memorized.
>> > -- 
>> > Brian Tillman
>>

I was having the exact same issue -- happened when I  either created a new 
message or replied. I tried everything stated above. The third thing I tried 
worked.

I have been using Office 2007 since RTM (installed via DVD) and then 
installed Vista Home Ultimate when it came out (via DVD). As well, "Show 
hidden files and folders" is selected.

What I tried:
1. I searched for extend.dat, found it, and deleted it.
THEN:  I restarted Outlook...same issue happened

2. I went into the registry and in 
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Exchange\Client\Extensions I found the 
faxextension.dll and deleted it
THEN: I restarted  Outlook...same issue happened

3. Then I looked a Russ's path for Vista 
users(<drive>:\Users\%UserProfile%\AppData\Local\Microsoft\Outlook ) found 
extend.dat and deleted it.
THEN: I restarted Outlook...and this finally worked.

Hail all you MVPs (from the insider Office "Crabby")


"Russ Valentine [MVP-Outlook]" wrote:

> I've seen several similar reports, but we've not had any steps to repro the 
> problem and can't tell whether this is an Outlook or Vista problem. What 
> were the steps that produced the error for you (including how you installed 
> your OS and how you installed Office, including its version). Did you try 
> the solution in this thread? It's the most logical place to start.
> -- 
> Russ Valentine
> [MVP-Outlook]
> "jw1941"  wrote in message 
> news:3B948D45-659F-4337-8A41-4068C3CCB728@microsoft.com...
> >I am having this identical problem, except it only occurs for me when I try
> > new message (not on reply) and it only happens once on each opening of
> > Outlook. I'm told it may be fixed by running detect and repair, but this 
> > was
> > information for XP and not for Vista. I think this is a problem with Vista
> > and not with Outlook. Any thoughts?
> >
> > "Russ Valentine [MVP-Outlook]" wrote:
> >
> >> <drive>:\Users\%UserProfile%\AppData\Local\Microsoft\Outlook
> >>
> >> -- 
> >> Russ Valentine
> >> [MVP-Outlook]
> >> "Brian Tillman"  wrote in message
> >> news:eKh1NLAXHHA.1016@TK2MSFTNGP04.phx.gbl...
> >> > sotavento524  wrote:
> >> >
> >> >> Thanks for the answer but no extend.dat file found.
> >> >
> >> > Did you enable viewing hidden files and folders?  For Windows XP, look 
> >> > in
> >> > %UserProfile%\Local Settings\Application Data\Microsoft\Outlook.  Vista
> >> > has a similar path, but I don't yet have it memorized.
> >> > -- 
> >> > Brian Tillman
> >> 
> 
> 
>

Hi Annik,
Good clues here. I've been trying to get a bead on this one. So if I 
understand correctly, you first did an in place upgrade of Office 
(presumably from Office 2003), then after that did an in place upgrade of 
your OS (presumably from Win XP), but the problem did not appear until you 
did the OS upgrade? Is that right?
I'm guessing that the Vista upgrade moved your old extend.dat file to a 
location where Outlook could no longer find it. Of course, your new Outlook 
profile should not have even been looking for it in the first place, but we 
all know Outlook never disconnects all the stuff it should from previous 
profiles until you force it to. We always recommend that in place Office 
upgrade be followed with creating a brand new Outlook profile because these 
problems are so prevalent.
Two in place upgrades takes more courage than I've ever had. May this be the 
only problem you encounter.
-- 
Russ Valentine
[MVP-Outlook]
"AS"  wrote in message 
news:45B17B64-DA1E-4A16-BAC4-AEB7E7F89AE9@microsoft.com...
>I was having the exact same issue -- happened when I  either created a new
> message or replied. I tried everything stated above. The third thing I 
> tried
> worked.
>
> I have been using Office 2007 since RTM (installed via DVD) and then
> installed Vista Home Ultimate when it came out (via DVD). As well, "Show
> hidden files and folders" is selected.
>
> What I tried:
> 1. I searched for extend.dat, found it, and deleted it.
> THEN:  I restarted Outlook...same issue happened
>
> 2. I went into the registry and in
> HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Exchange\Client\Extensions I found 
> the
> faxextension.dll and deleted it
> THEN: I restarted  Outlook...same issue happened
>
> 3. Then I looked a Russ's path for Vista
> users(<drive>:\Users\%UserProfile%\AppData\Local\Microsoft\Outlook ) found
> extend.dat and deleted it.
> THEN: I restarted Outlook...and this finally worked.
>
> Hail all you MVPs (from the insider Office "Crabby")
>
>
> "Russ Valentine [MVP-Outlook]" wrote:
>
>> I've seen several similar reports, but we've not had any steps to repro 
>> the
>> problem and can't tell whether this is an Outlook or Vista problem. What
>> were the steps that produced the error for you (including how you 
>> installed
>> your OS and how you installed Office, including its version). Did you try
>> the solution in this thread? It's the most logical place to start.
>> -- 
>> Russ Valentine
>> [MVP-Outlook]
>> "jw1941"  wrote in message
>> news:3B948D45-659F-4337-8A41-4068C3CCB728@microsoft.com...
>> >I am having this identical problem, except it only occurs for me when I 
>> >try
>> > new message (not on reply) and it only happens once on each opening of
>> > Outlook. I'm told it may be fixed by running detect and repair, but 
>> > this
>> > was
>> > information for XP and not for Vista. I think this is a problem with 
>> > Vista
>> > and not with Outlook. Any thoughts?
>> >
>> > "Russ Valentine [MVP-Outlook]" wrote:
>> >
>> >> <drive>:\Users\%UserProfile%\AppData\Local\Microsoft\Outlook
>> >>
>> >> -- 
>> >> Russ Valentine
>> >> [MVP-Outlook]
>> >> "Brian Tillman"  wrote in message
>> >> news:eKh1NLAXHHA.1016@TK2MSFTNGP04.phx.gbl...
>> >> > sotavento524  wrote:
>> >> >
>> >> >> Thanks for the answer but no extend.dat file found.
>> >> >
>> >> > Did you enable viewing hidden files and folders?  For Windows XP, 
>> >> > look
>> >> > in
>> >> > %UserProfile%\Local Settings\Application Data\Microsoft\Outlook. 
>> >> > Vista
>> >> > has a similar path, but I don't yet have it memorized.
>> >> > -- 
>> >> > Brian Tillman
>> >>
>>
>>
>>

I have the same issue.I upgraded to windows vista 32 bit.I have microsoft 
outlookxp 2002.When I send email from Outlook.c:\windows\system32\fxsext32.
dll could not be installed or loaded.This problem may be resolved by using 
detect and repair.Unable to loadc:\windows\system32\fxsext32.dll may be out 
of memory,out of system resources,or missing  a .dll file. Would the fix for 
me (assuming there is one)be the same since I am using microsoft outlook xp 
2002?
Thanks

url:http://www.ureader.com/msg/107013453.aspx

Remove that extension from your Add-in manger.
-- 
Russ Valentine
[MVP-Outlook]
"Harriet Meyers"  wrote in message 
news:23ba204fca89474aa7b058bf64b2fcbb@newspe.com...
>I have the same issue.I upgraded to windows vista 32 bit.I have microsoft
> outlookxp 2002.When I send email from 
> Outlook.c:\windows\system32\fxsext32.
> dll could not be installed or loaded.This problem may be resolved by using
> detect and repair.Unable to loadc:\windows\system32\fxsext32.dll may be 
> out
> of memory,out of system resources,or missing  a .dll file. Would the fix 
> for
> me (assuming there is one)be the same since I am using microsoft outlook 
> xp
> 2002?
> Thanks
>
> url:http://www.ureader.com/msg/107013453.aspx

Sweet, I have been looking and reading about this issue for hours. The 
solution so simple and it works! Thank you 

"Brian Durfy" wrote:

> I had the same problem when upgrading to Vista and Office 2007.  Unfortunately the fixes listed in this thread did not work for me.  I could never find the Extend.dat file.  I struggled with this for a few months until I came across another fix on the internet.  Can't remember where.
> 
> Anyways it worked for me and was actually quite simple.  In Outlook 2007 follow these procedures, starting with the Tools Menu.
> 
> Tools>Trust Center
> Select Add-ins from the left side menu
> At the very bottom of the page there is a task bar labeled Manage:
> In the task bar scroll to Exchange Client Extensions, then select the GO button to the right.
> The Add-in Manager should appear and you should see some sort of Fax option, with a couple of other items above or below it.
> Un-check the fax item and select OK.
> 
> You should be golden now.
>