Cannot open attachments in Outlook after update to 11.6.6.

Same, immediately following the upgrade and impacts all office attachment types launching from Outlook (well, at least word, ppt, and excel). Preview attachments works fine. I've traced through every possible temp folder.. the path usually says: /private/var/folders/5z/<yada yada> changing permissions to full read/write wherever possible. I've also ensured that all office apps are given full read/write disk access in privacy settings.

very same issue using Apple Mail wherein Preview reports "The file “<name of file>.pdf” couldn’t be opened because "user" doesn’t have permission to view it. ... "

• only the first attempt to open an email attachment will succeed and that attachment can be closed & reopened repeatedly
• every attempt to open a second, third, ... attachment fails with message above, even if I attempt to reopen the first attachment after failing at trying to open another
• Quitting & Re-opening Preview seems to reset the capability to open any first attachment
• after spending a couple hours on the phone with three Apple Care techs (one at whatever they call the "next level"), I completely erased both my iMac and MacBook Pro and reinstalled OS X 11.6.6 on each to no avail
• interestingly, the iMac first reset to OS X 11.5 - which behaved exactly the same as OS X 11.6.6
• also, Preview opens files on either of my Desktops without a hitch and attachments open as expected on my iPhone XR
• after messing with the Mail-Preview issue for a while, I tried to open email-attached *.doc and *.xlx files, and a similar issue occurred, only the message was somewhat different and I was able to muddle through to open the files
• IMHO, Apple engineering needs to dig into this issue, perhaps exploring for a problem with mail server(s) common to folks with the issue
• meanwhile, I'll drag attachments to my desktop where they seem to save and open fine

Well, at least Microsoft (365) provided me this, though they did not create this mammoth problem; at least they are giving customers some follow-up ... unlike our host ...

Please refer the article that contains the recent update on the attachment permission issue for your reference : https://support.microsoft.com/en-us/topic/ec9b3364-8acf-4f5a-9dc7-987fda68e2ec 

Following my upgrade to 11.6.6, I've got the problem with both Outlook and MacOS Mail on both my iMac (late 2015) and MacBook (mid 2015).

After 3+ hours on the 'phone with a couple of Apple engineers, the proposed solution from the senior engineer was a reinstallation of the OS from recovery mode. That didn't solve the problem.

I'm still waiting back to hear from him.

It is an incredibly annoying problem but I do appreciate Apple making trained and experienced support folk available for a humble retail customer with 7 year old machines.

I do hope they come up with a solution soon!!

apple shame! It's a sneaky way to force you to change your computer even if it's still fully functional! I went back to Catalina and everything works perfectly! Apple You must publish that MacBook Pro (Retina, 15-inch, Mid 2014) is not upgradeable to Big Sur! Now I have the serious problem that my Photo library that was opened with Big Sur no longer opens with the version of Photos that runs on Catalina. I lost several days of work trying to fix this mess not caused by me! Apple have been a customer for over thirty years but I am very disappointed by this unfair behavior!

Apple shame!

I have updated to the Big sur v. 11.6.6. and suddenly everything was no more working:

Mail, preview, Outlook, Airdrop... a terrible mess!

It's a sneaky way to force you to change your computer even if it's still fully functional!

I have made all the efforts to fix it, spending our with support and re installing Os from scratch! Nothing to do!

I went back to Catalina and everything works perfectly!

Apple You must publish that MacBook Pro (Retina, 15-inch, Mid 2014) is not upgradeable to Big Sur! Now I have the serious problem that my Photo library that was opened with Big Sur no longer opens with the version of Photos that runs on Catalina.

I lost several days of work trying to fix this mess not caused by me! Apple I have been a loyal customer for over thirty years but I am very disappointed by this unfair behavior!

@lipo2lipo yes that's correct.

With Preview already open and double clicking the temporary file in finder it also works. So the problems seems only to occur in combination with outlook ...

I have the same issue in Apple mail, the only workaround for this is to change defaults for pdf. and use Acrobat Reader but it is very annoying that this stopped working properly.

This is Apple's bug alone. I can reproduce this bug on a clean install of 11.6.6 prior to installation of anything third-party.

Yes, thank you. If you shut down Preview, image attachments certainly seem to work.

You can click on the attachment and hit the space bar to get a quick preview if that helps until this bug is fixed.

Thank you both for confirming that all looks well with 11.6.7. Much appreciated.

It is doing the same for me and quite an annoyance.

What's the link to file a bug report with Apple, and also with Microsoft (though the latter will say it is Apple since all was fine until the new update).

Now I've created a bug report at Apple, too. Hope that helps ;-)

At Microsoft I can't create a bug report because I'm using an enterprise license and Microsoft wants me to contact my administrator. I can skip this as a Mac user.

Then please let Apple know ... Feedback Assistant - easy to use and maybe someone will do something ... sure, we're not Monterey, but for productivity purposes I always stay one OS behind until about August ... and this is killing productivity ...