Hi, Since yesterday, July 29, the Reply (or Reply All) and Forward buttons are not responding in my Outlook (Microsoft 365 on Windows 10 Pro) app. It's not that the buttons are grayed out, they appear active, but simply don't respond. I've tried all the following methods: Right-click + Reply/Forward Clicking one of the 'arrow' buttons above the message. Double-click to open a Message in new Window, choose Reply/Forward. Always the same result. It's happening with 2 different MIcrosoft 365 accounts I use, also a Gmail account. This only started happening yesterday, July 29. I have Microsoft Outlook Version 1.2023.719.200 (Production). Client Version is 20230721005.08 Any suggestions please? This doesn't happen when I use Outlook / Microsoft 365 web version. But I need the Windows App. As a fall back, how can I get back to the old Outlook App? This never happened with it....

Hi @DL-2225 , Welcome to our forum! Based on my test on New Outlook for windows with the same version as yours (as shown in the below figure), i can reply and forward successfully. As a fall back, how can I get back to the old Outlook App? We can turn the New Outlook button to switch to Legacy Outlook. It's suggested that you could try to switch to Legacy Outlook and then re-turn to New Outlook to check if the issue persists. If the issue persists, considering that it would also be affected when the outlook program itself is damaged, it is recommended that you try to fix the Office application . If it doesn't work, it's suggested that you could try to uninstall and reinstall to check if there're any differences. Hope to help you! If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment". Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.

Reply and Forward buttons not respoding. In any emails.

Accepted answer

ChristyZhang-MSFT 24,981 Reputation points Microsoft Vendor

2023-07-31T03:41:17.6233333+00:00

Hi @DL-2225 ,

Welcome to our forum!

Based on my test on New Outlook for windows with the same version as yours (as shown in the below figure), i can reply and forward successfully.

As a fall back, how can I get back to the old Outlook App?

We can turn the New Outlook button to switch to Legacy Outlook. It's suggested that you could try to switch to Legacy Outlook and then re-turn to New Outlook to check if the issue persists.

If the issue persists, considering that it would also be affected when the outlook program itself is damaged, it is recommended that you try to fix the Office application.

If it doesn't work, it's suggested that you could try to uninstall and reinstall to check if there're any differences.

Hope to help you!

If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".

Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.
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1 person found this answer helpful.
DL-2225 20 Reputation points

2023-07-31T13:57:01.8433333+00:00

Apologies @ChristyZhang-MSFT I thought I added a comment to your answer, but it seems to have disappeared! Thank you for your help but I'm afraid that this suggestion didn't fix it. I switched back to Legacy Outlook, and back again to the new version. But still the same problem persists. I also tried the Repair option for Outlook in Apps & Features. I don't have time at the moment for a full reset / reinstall, for now I'll work with the legacy version.

Thank you, DL.

ChristyZhang-MSFT 24,981 Reputation points Microsoft Vendor

2023-08-01T01:50:50.5466667+00:00

Hi @Declan Lennon ,

Thanks for your reply!

Agree, switching to Legacy is the most convenient workaround yet. If you have time later, it's recommended that you could try to reinstall Office programs.

By the way, if you think my reply is useful, would you mind marking the helpful post as an answer? Which would benefit others who also has similar issues in forum.

Laurens Driessen 15 Reputation points

2024-06-26T07:15:31.1666667+00:00

Since thursday 13-6-2024 we have exactly the same issue.

Some users report they cannot use the Reply buttons anymore for some Shared Mailboxes. We tried the following:

New Outlook active > no switch back anymore

Build: 2308 Build 16.0.16731.20542 64b

Full Access & Send As

Webmail works

New outlook profile > not tested yet because of only one mailbox involved (varies per user)

Renamed Outlook cache folder (C:\Users%username%\AppData\Local\Microsoft\Outlook)

Quickrepair

Remove and add Full Access & Send As rights > works for most users.

Outlook Safe mode > works

Disabled all add-ins in normal mode > only Zivver add-in cannot be disabled > issue persists > under investigation to manual disable add-in

Workaround:

Webmail

Remove and add Full Access & Send As rights > works for most users. But more users are reporting the same issue, so it is not the sollution.

Does anyone has any suggestions?

DL-2225 20 Reputation points

2024-06-26T07:38:11.94+00:00

Hi @Laurens Driessen , this problem resolved itself for us some time back, I can't tell exactly when. So we can reply and forward as normal currently using current version, 1.2024.619.100.

BTW, we've gotten in the habit of keeping both the old and the 'classic' Outlook active at the same time. I know you say that can't switch back anymore, but our version certainly still allows it. A feature that we find particularly lacking in the new Outlook is the sorting of emails by e.g. From address, Subject line etc. Definitely works far better in the old version...

Laurens Driessen 15 Reputation points

2024-06-26T09:09:28.36+00:00

Thanks for the quick response.
We have the issue in an organization environment with multiple users. I agree the old outlook is working much better but unfotunenately we cannot switch back anymore. For now it looks like the Zivver plugin for Outlook is the issue while when we turn it off the reply buttons do work.

Still investigating though.
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