Unable to cast COM object of type ‘Microsoft.Office.Interop.Outlook.ApplicationClass’ to interface type ‘Microsoft.Office.Interop.Outlook._Application’. This operation failed because the QueryInterface call on the COM component for the interface with IID ‘{00063001-0000-0000-C000-000000000046}’ fail…

Hi @alison.guo Confirm that outlook application is installed in your local computer. If not installed do install the outlook application. If you are using outlook activities the outlook application has to be installed in machine. Hope it helps!!

Hi @alison.guo , check open outlook in your PC regards, LNV

Hi @alison.guo Please check on this [image] Unable to cast COM object of type 'Microsoft.Office.Interop.Outlook.ApplicationClass' Academy Feedback i just repaired my office and it worked… [image] Unable To Cast COM Object Of Type 'Microsoft.Office.I…

I have repaired office and the registry file looks like fine, only 9.6 key under HKEY_CLASSES_ROOT\TypeLib{00062FFF-0000-0000-C000-000000000046}. but the problem still is happened.

no, the error still is happened.

can you share image about that error?

i have re-installed office, and outlook activity is install in UiPath, but same error is happened.

[mail error] 23.6.1-beta.13324+Branch.release-v23.6.1.Sha.52787b786620e97cba5555379da6e6bb423b3e6b Source: 生成邮件 Message: Unable to cast COM object of type ‘Microsoft.Office.Interop.Outlook.ApplicationClass’ to interface type ‘Microsoft.Office.Interop.Outlook._Application’. This operation failed …

I see your error you can check [image] update newest ver then try again regards

Hi @alison.guo , You can check [image] Issue with office 2016 64bits Help Hello, I’ve been trying to update my office to 2016. I have installed 2010 (for other reasons) and the 2013 worked fine… but when I update the office throws me this error. Send Outlook Mail Messag…

Outlook send Mail Error

Help Studio

Nguyen_Van_Luong1 (Nguyen Van Luong) August 11, 2023, 7:06am 11

Hi @alison.guo ,
You can check

you can erase from the registry the key
00063001-0000-0000-C000-000000000046
now it is just saying that
Send Outlook Mail Message : Object reference not set to an instance of an object.
regards.

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