UnAuthorized error with access token generated from Outlook WebAddin
I am trying to use access token generated in Outlook Addin to download mail attachments, it is throwing an unauthorized error(401). Looks AccessToken is not valid. Using the accessToken within 5 min after generation in the add-in to make sure to avoid expired code.
Followed steps suggested in Office documentation and created the C# code. My code gist is available here : https://gist.github.com/rajeevprasanna/6b0ba1db1599500a94451958b4f52d79
My add-in manifest is available here which asks ReadWriteMailbox permission : https://gist.github.com/rajeevprasanna/5ef93e3df80f304826742bb81a0b4421#file-addin-manifest-xml-L64
I am experimenting on Office365 Outlook WebClient but I have to work on a uniform solution which works on all outlook instances and office365 and Exchange versions.
Code for extracting access token as suggested here :
let cb = (asyncResult) => {
console.log('asyncResult => '+ R.toString(asyncResult));
};
var options = {
isRest: true,
asyncContext: { message: 'Hello World!' }
};
Office.context.mailbox.getCallbackTokenAsync(options, cb);
Using the value filed of the callback response as accessToken while making API call.
sample getCallbackTokenAsync response :
{
"asyncContext": {
"message": "Hello World!"
},
"status": "succeeded",
"value": "eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiIsIng1dCI6ImthME5Hb19aNUkwRms1MXpKblZjT2tHbzFvbyJ9.eyJzbXRwIjoic3JpbmlAeGVub3Z1cy1hbWVyaWNhbmEuY29tIiwidmVyIjoiRXhjaGFuZ2UuQ2FsbGJhY2suVjIiLCJhcHBpZCI6IjAwMDAwMDAyLTAwMDAtMGZmMS1jZTAwLTAwMDAwMDAwMDAwMCIsImRlcGxveW1lbnRpZCI6IiIsInRpZCI6Imhvc3RpbmdjbG91ZGFwcC5uZXQiLCJhY3IiOiIxIiwiYXBwaWRhY3IiOiIwIiwic2NwIjoiTWFpbC5SZWFkV3JpdGUgTWFpbC5TZW5kIENhbGVuZGFycy5SZWFkV3JpdGUgQ29udGFjdHMuUmVhZFdyaXRlIiwiaXNzIjoiMDAwMDAwMDItMDAwMC0wZmYxLWNlMDAtMDAwMDAwMDAwMDAwIiwiYXVkIjoiaHR0cHM6Ly93ZWJtYWlsLmhvc3RpbmdjbG91ZGFwcC5jb20iLCJleHAiOjE1NDI4NzcwMDMsIm5iZiI6MTU0Mjg3NjEwM30.c3sknGGbw1Jrip9Ke1AcLyRL-6VnWSSWTGrwmeo6Z7xwBfKD3ppNkSqb4cVZIzuV-8udQps2abQ9scPMn0DNRbFRUNlBfkhHUqR2_JHrMcMptL6ZqF-a7_-gOMcBSgNdUCk5mhGDJs9qiEiM47thv5HZC97k-aYZ-iyU8N-8SgMNDc8vjBdS2nPSKp6FgQfezmjxADT-mbflxNUIwUDfOAys2l8v_Qw30t3LDca2AMmHyK3GbEaXejdO4muzC-ZrRMUVThIfFsMs0x67E2aY--lxSwDmrfcEnXODW0_J72RtFNDV5wjxf1QH6-xfP0A34qbUlmVnjjiCeYCeCCtNEg"
}
After doing some trails and comparing with an example project, i found the error seems to be with permission type ReadWriteMailbox. I am able to fetch attachments if query is done with permission type ReadItem or ReadWriteItem
exchangewebservices outlook-addin office-js outlook-web-addins
asked Nov 21 '18 at 11:46
RajeevRajeev
1,76742843
add a comment |
I am trying to use access token generated in Outlook Addin to download mail attachments, it is throwing an unauthorized error(401). Looks AccessToken is not valid. Using the accessToken within 5 min after generation in the add-in to make sure to avoid expired code.
Followed steps suggested in Office documentation and created the C# code. My code gist is available here : https://gist.github.com/rajeevprasanna/6b0ba1db1599500a94451958b4f52d79
My add-in manifest is available here which asks ReadWriteMailbox permission : https://gist.github.com/rajeevprasanna/5ef93e3df80f304826742bb81a0b4421#file-addin-manifest-xml-L64
I am experimenting on Office365 Outlook WebClient but I have to work on a uniform solution which works on all outlook instances and office365 and Exchange versions.
Code for extracting access token as suggested here :
let cb = (asyncResult) => {
console.log('asyncResult => '+ R.toString(asyncResult));
};
var options = {
isRest: true,
asyncContext: { message: 'Hello World!' }
};
Office.context.mailbox.getCallbackTokenAsync(options, cb);
Using the value filed of the callback response as accessToken while making API call.
sample getCallbackTokenAsync response :
{
"asyncContext": {
"message": "Hello World!"
},
"status": "succeeded",
"value": "eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiIsIng1dCI6ImthME5Hb19aNUkwRms1MXpKblZjT2tHbzFvbyJ9.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.c3sknGGbw1Jrip9Ke1AcLyRL-6VnWSSWTGrwmeo6Z7xwBfKD3ppNkSqb4cVZIzuV-8udQps2abQ9scPMn0DNRbFRUNlBfkhHUqR2_JHrMcMptL6ZqF-a7_-gOMcBSgNdUCk5mhGDJs9qiEiM47thv5HZC97k-aYZ-iyU8N-8SgMNDc8vjBdS2nPSKp6FgQfezmjxADT-mbflxNUIwUDfOAys2l8v_Qw30t3LDca2AMmHyK3GbEaXejdO4muzC-ZrRMUVThIfFsMs0x67E2aY--lxSwDmrfcEnXODW0_J72RtFNDV5wjxf1QH6-xfP0A34qbUlmVnjjiCeYCeCCtNEg"
}
After doing some trails and comparing with an example project, i found the error seems to be with permission type ReadWriteMailbox. I am able to fetch attachments if query is done with permission type ReadItem or ReadWriteItem
exchangewebservices outlook-addin office-js outlook-web-addins
asked Nov 21 '18 at 11:46
RajeevRajeev
1,76742843
1
Which client are you trying this from - Outlook Desktop, Web or Mac? Is your exchange backend on Office365 or is it On-Prem?
– Outlook Add-ins Team - MSFT
Nov 22 '18 at 0:02
@OutlookAdd-insTeam-MSFT updated the question with details you asked.
– Rajeev
Nov 22 '18 at 7:00
1
can you run the sample code at this link to see if succeeds in your add-in? Please use an e-mail that contains a single attachment. The attachment should be a plain text file attachment. Here's the link : gist.github.com/exextoc/472f3c261d654e0eeacd10cad7e0c658
– Outlook Add-ins Team - MSFT
Dec 11 '18 at 3:09
@OutlookAdd-insTeam-MSFT, This solution is working. but it will not support in old outlook version where isRest is not supported. how to handle those cases?
– Rajeev
Dec 12 '18 at 10:27
1
For clients that do not support isRest, we recommend using EWS instead to retrieve attachments.In your call to getcallbacktokenasync do not pass in isRest(it would default to false) and give you a token you can use against EWS.
– Outlook Add-ins Team - MSFT
Dec 18 '18 at 19:44
add a comment |
I am trying to use access token generated in Outlook Addin to download mail attachments, it is throwing an unauthorized error(401). Looks AccessToken is not valid. Using the accessToken within 5 min after generation in the add-in to make sure to avoid expired code.
Followed steps suggested in Office documentation and created the C# code. My code gist is available here : https://gist.github.com/rajeevprasanna/6b0ba1db1599500a94451958b4f52d79
My add-in manifest is available here which asks ReadWriteMailbox permission : https://gist.github.com/rajeevprasanna/5ef93e3df80f304826742bb81a0b4421#file-addin-manifest-xml-L64
I am experimenting on Office365 Outlook WebClient but I have to work on a uniform solution which works on all outlook instances and office365 and Exchange versions.
Code for extracting access token as suggested here :
let cb = (asyncResult) => {
console.log('asyncResult => '+ R.toString(asyncResult));
};
var options = {
isRest: true,
asyncContext: { message: 'Hello World!' }
};
Office.context.mailbox.getCallbackTokenAsync(options, cb);
Using the value filed of the callback response as accessToken while making API call.
sample getCallbackTokenAsync response :
{
"asyncContext": {
"message": "Hello World!"
},
"status": "succeeded",
"value": "eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiIsIng1dCI6ImthME5Hb19aNUkwRms1MXpKblZjT2tHbzFvbyJ9.eyJzbXRwIjoic3JpbmlAeGVub3Z1cy1hbWVyaWNhbmEuY29tIiwidmVyIjoiRXhjaGFuZ2UuQ2FsbGJhY2suVjIiLCJhcHBpZCI6IjAwMDAwMDAyLTAwMDAtMGZmMS1jZTAwLTAwMDAwMDAwMDAwMCIsImRlcGxveW1lbnRpZCI6IiIsInRpZCI6Imhvc3RpbmdjbG91ZGFwcC5uZXQiLCJhY3IiOiIxIiwiYXBwaWRhY3IiOiIwIiwic2NwIjoiTWFpbC5SZWFkV3JpdGUgTWFpbC5TZW5kIENhbGVuZGFycy5SZWFkV3JpdGUgQ29udGFjdHMuUmVhZFdyaXRlIiwiaXNzIjoiMDAwMDAwMDItMDAwMC0wZmYxLWNlMDAtMDAwMDAwMDAwMDAwIiwiYXVkIjoiaHR0cHM6Ly93ZWJtYWlsLmhvc3RpbmdjbG91ZGFwcC5jb20iLCJleHAiOjE1NDI4NzcwMDMsIm5iZiI6MTU0Mjg3NjEwM30.c3sknGGbw1Jrip9Ke1AcLyRL-6VnWSSWTGrwmeo6Z7xwBfKD3ppNkSqb4cVZIzuV-8udQps2abQ9scPMn0DNRbFRUNlBfkhHUqR2_JHrMcMptL6ZqF-a7_-gOMcBSgNdUCk5mhGDJs9qiEiM47thv5HZC97k-aYZ-iyU8N-8SgMNDc8vjBdS2nPSKp6FgQfezmjxADT-mbflxNUIwUDfOAys2l8v_Qw30t3LDca2AMmHyK3GbEaXejdO4muzC-ZrRMUVThIfFsMs0x67E2aY--lxSwDmrfcEnXODW0_J72RtFNDV5wjxf1QH6-xfP0A34qbUlmVnjjiCeYCeCCtNEg"
}
After doing some trails and comparing with an example project, i found the error seems to be with permission type ReadWriteMailbox. I am able to fetch attachments if query is done with permission type ReadItem or ReadWriteItem
exchangewebservices outlook-addin office-js outlook-web-addins
asked Nov 21 '18 at 11:46
RajeevRajeev
1,76742843
I am trying to use access token generated in Outlook Addin to download mail attachments, it is throwing an unauthorized error(401). Looks AccessToken is not valid. Using the accessToken within 5 min after generation in the add-in to make sure to avoid expired code.
Followed steps suggested in Office documentation and created the C# code. My code gist is available here : https://gist.github.com/rajeevprasanna/6b0ba1db1599500a94451958b4f52d79
My add-in manifest is available here which asks ReadWriteMailbox permission : https://gist.github.com/rajeevprasanna/5ef93e3df80f304826742bb81a0b4421#file-addin-manifest-xml-L64
I am experimenting on Office365 Outlook WebClient but I have to work on a uniform solution which works on all outlook instances and office365 and Exchange versions.
Code for extracting access token as suggested here :
let cb = (asyncResult) => {
console.log('asyncResult => '+ R.toString(asyncResult));
};
var options = {
isRest: true,
asyncContext: { message: 'Hello World!' }
};
Office.context.mailbox.getCallbackTokenAsync(options, cb);
Using the value filed of the callback response as accessToken while making API call.
sample getCallbackTokenAsync response :
{
"asyncContext": {
"message": "Hello World!"
},
"status": "succeeded",
"value": "eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiIsIng1dCI6ImthME5Hb19aNUkwRms1MXpKblZjT2tHbzFvbyJ9.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.c3sknGGbw1Jrip9Ke1AcLyRL-6VnWSSWTGrwmeo6Z7xwBfKD3ppNkSqb4cVZIzuV-8udQps2abQ9scPMn0DNRbFRUNlBfkhHUqR2_JHrMcMptL6ZqF-a7_-gOMcBSgNdUCk5mhGDJs9qiEiM47thv5HZC97k-aYZ-iyU8N-8SgMNDc8vjBdS2nPSKp6FgQfezmjxADT-mbflxNUIwUDfOAys2l8v_Qw30t3LDca2AMmHyK3GbEaXejdO4muzC-ZrRMUVThIfFsMs0x67E2aY--lxSwDmrfcEnXODW0_J72RtFNDV5wjxf1QH6-xfP0A34qbUlmVnjjiCeYCeCCtNEg"
}
After doing some trails and comparing with an example project, i found the error seems to be with permission type ReadWriteMailbox. I am able to fetch attachments if query is done with permission type ReadItem or ReadWriteItem
exchangewebservices outlook-addin office-js outlook-web-addins
exchangewebservices outlook-addin office-js outlook-web-addins
asked Nov 21 '18 at 11:46
RajeevRajeev
1,76742843
asked Nov 21 '18 at 11:46
RajeevRajeev
1,76742843
edited Nov 23 '18 at 10:44
Rajeev
asked Nov 21 '18 at 11:46
RajeevRajeev
1,76742843
asked Nov 21 '18 at 11:46
RajeevRajeev
1,76742843
asked Nov 21 '18 at 11:46
RajeevRajeev
1,76742843
1,76742843
1
Which client are you trying this from - Outlook Desktop, Web or Mac? Is your exchange backend on Office365 or is it On-Prem?
– Outlook Add-ins Team - MSFT
Nov 22 '18 at 0:02
@OutlookAdd-insTeam-MSFT updated the question with details you asked.
– Rajeev
Nov 22 '18 at 7:00
1
can you run the sample code at this link to see if succeeds in your add-in? Please use an e-mail that contains a single attachment. The attachment should be a plain text file attachment. Here's the link : gist.github.com/exextoc/472f3c261d654e0eeacd10cad7e0c658
– Outlook Add-ins Team - MSFT
Dec 11 '18 at 3:09
@OutlookAdd-insTeam-MSFT, This solution is working. but it will not support in old outlook version where isRest is not supported. how to handle those cases?
– Rajeev
Dec 12 '18 at 10:27
1
For clients that do not support isRest, we recommend using EWS instead to retrieve attachments.In your call to getcallbacktokenasync do not pass in isRest(it would default to false) and give you a token you can use against EWS.
– Outlook Add-ins Team - MSFT
Dec 18 '18 at 19:44
add a comment |
1
Which client are you trying this from - Outlook Desktop, Web or Mac? Is your exchange backend on Office365 or is it On-Prem?
– Outlook Add-ins Team - MSFT
Nov 22 '18 at 0:02
@OutlookAdd-insTeam-MSFT updated the question with details you asked.
– Rajeev
Nov 22 '18 at 7:00
1
can you run the sample code at this link to see if succeeds in your add-in? Please use an e-mail that contains a single attachment. The attachment should be a plain text file attachment. Here's the link : gist.github.com/exextoc/472f3c261d654e0eeacd10cad7e0c658
– Outlook Add-ins Team - MSFT
Dec 11 '18 at 3:09
@OutlookAdd-insTeam-MSFT, This solution is working. but it will not support in old outlook version where isRest is not supported. how to handle those cases?
– Rajeev
Dec 12 '18 at 10:27
1
For clients that do not support isRest, we recommend using EWS instead to retrieve attachments.In your call to getcallbacktokenasync do not pass in isRest(it would default to false) and give you a token you can use against EWS.
– Outlook Add-ins Team - MSFT
Dec 18 '18 at 19:44
1
1
Which client are you trying this from - Outlook Desktop, Web or Mac? Is your exchange backend on Office365 or is it On-Prem?
– Outlook Add-ins Team - MSFT
Nov 22 '18 at 0:02
Which client are you trying this from - Outlook Desktop, Web or Mac? Is your exchange backend on Office365 or is it On-Prem?
– Outlook Add-ins Team - MSFT
Nov 22 '18 at 0:02
@OutlookAdd-insTeam-MSFT updated the question with details you asked.
– Rajeev
Nov 22 '18 at 7:00
@OutlookAdd-insTeam-MSFT updated the question with details you asked.
– Rajeev
Nov 22 '18 at 7:00
1
1
can you run the sample code at this link to see if succeeds in your add-in? Please use an e-mail that contains a single attachment. The attachment should be a plain text file attachment. Here's the link : gist.github.com/exextoc/472f3c261d654e0eeacd10cad7e0c658
– Outlook Add-ins Team - MSFT
Dec 11 '18 at 3:09
can you run the sample code at this link to see if succeeds in your add-in? Please use an e-mail that contains a single attachment. The attachment should be a plain text file attachment. Here's the link : gist.github.com/exextoc/472f3c261d654e0eeacd10cad7e0c658
– Outlook Add-ins Team - MSFT
Dec 11 '18 at 3:09
@OutlookAdd-insTeam-MSFT, This solution is working. but it will not support in old outlook version where isRest is not supported. how to handle those cases?
– Rajeev
Dec 12 '18 at 10:27
@OutlookAdd-insTeam-MSFT, This solution is working. but it will not support in old outlook version where isRest is not supported. how to handle those cases?
– Rajeev
Dec 12 '18 at 10:27
1
1
For clients that do not support isRest, we recommend using EWS instead to retrieve attachments.In your call to getcallbacktokenasync do not pass in isRest(it would default to false) and give you a token you can use against EWS.
– Outlook Add-ins Team - MSFT
Dec 18 '18 at 19:44
For clients that do not support isRest, we recommend using EWS instead to retrieve attachments.In your call to getcallbacktokenasync do not pass in isRest(it would default to false) and give you a token you can use against EWS.
– Outlook Add-ins Team - MSFT
Dec 18 '18 at 19:44
add a comment |
0
active
oldest
votes
Your Answer
StackExchange.ifUsing("editor", function () {
StackExchange.using("externalEditor", function () {
StackExchange.using("snippets", function () {
StackExchange.snippets.init();
});
});
}, "code-snippets");
StackExchange.ready(function() {
var channelOptions = {
tags: "".split(" "),
id: "1"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
}
});
function createEditor() {
StackExchange.prepareEditor({
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: true,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: 10,
bindNavPrevention: true,
postfix: "",
imageUploader: {
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
},
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
});
}
});
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53411354%2funauthorized-error-with-access-token-generated-from-outlook-webaddin%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
0
active
oldest
votes
0
active
oldest
votes
active
oldest
votes
active
oldest
votes
Thanks for contributing an answer to Stack Overflow!
- Please be sure to answer the question. Provide details and share your research!
But avoid …
- Asking for help, clarification, or responding to other answers.
- Making statements based on opinion; back them up with references or personal experience.
To learn more, see our tips on writing great answers.
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53411354%2funauthorized-error-with-access-token-generated-from-outlook-webaddin%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
1
Which client are you trying this from - Outlook Desktop, Web or Mac? Is your exchange backend on Office365 or is it On-Prem?
– Outlook Add-ins Team - MSFT
Nov 22 '18 at 0:02
@OutlookAdd-insTeam-MSFT updated the question with details you asked.
– Rajeev
Nov 22 '18 at 7:00
1
can you run the sample code at this link to see if succeeds in your add-in? Please use an e-mail that contains a single attachment. The attachment should be a plain text file attachment. Here's the link : gist.github.com/exextoc/472f3c261d654e0eeacd10cad7e0c658
– Outlook Add-ins Team - MSFT
Dec 11 '18 at 3:09
@OutlookAdd-insTeam-MSFT, This solution is working. but it will not support in old outlook version where isRest is not supported. how to handle those cases?
– Rajeev
Dec 12 '18 at 10:27
1
For clients that do not support isRest, we recommend using EWS instead to retrieve attachments.In your call to getcallbacktokenasync do not pass in isRest(it would default to false) and give you a token you can use against EWS.
– Outlook Add-ins Team - MSFT
Dec 18 '18 at 19:44