Add In Not Showing in Outlook 2013

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Hi friends,

I have developed an AddIn for Outlook 2013...
But It shows on outlook only at the first run.... If I made any changes, It wont appear...
I will have to rename the project and run again it to reflect the changes...
Please Help..... I am in a stuck....

Posted 3-Aug-13 21:58pm

Yesudasan Moses

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Joezer BH 4-Aug-13 4:33am

On the second run it doesn't work?
OR
It works always but you cannot update the add-in?

Yesudasan Moses 4-Aug-13 4:36am

After Build, When I run from VS, It shows this error
"The customization cannot be installed because another version is currently installed "
even though its the same add in....

2 solutions

Solution 2

You are trying to register the GUID for the same plugin again and again. The code for registering your addin with a unqiue GUID in the registry should run only once and from the next time you should just do a check in registry to verify if the entry already exists or not.

Cheers,
Kushagra

Posted 3-Aug-13 22:52pm

Kushagra Tiwari

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**Joezer BH** · Accepted Answer · 2013-08-03T22:43:00

This error should only occur on your development machines.
You can try to delete the following registry key:

HKEY_CURRENT_USER\Software\Microsoft\VSTA\Solutions\{GUID}
{GUID} will be different on your environment.

Check to ensure that you're deleting the right key. Confirm by checking the DWORD "Url" value at the key.

see more at:
Troubleshooting Office Solution Deployment[^]

Cheers,
Edo