iCloud uninstall/upgrade error 2343

I had the same problem and I found a solution that worked for me...

You will need to uninstall Outlook 2016 (Office) and re-install an older version of Outlook for iCloud for WIndows 5.0 to function properly. For some reason iCloud requires an email program to be active in order to function at all (regardless of whether you intend to use the email sync function or not).

SImply un-installing Outlook 2016 will not work- you actually have to replace it with an older version of Outlook or another email client in order for iCloud to function. I have also submitted a bug to Apple about this.

I hope it helps alleviate some of the frustration I went through.

Same error message with iCloud 5.0 installation. I hope there will be another solution than rolling back to an older version of Outlook? I have Office 365 and can't roll back (or don't know how) to Outlook 2013...

I am having the same problem with the update to iCloud 5.0. I have Outlook 2016 64bit installed through Office 365 Business. This is definitely something I think Apple needs to fix. I shouldn't have to revert to a lesser version of Outlook to make iCloud work.

I agree. I'm not rolling back from Office 2016... Rolling back should not be the "answer..."

Same Problem with 4.1 update to 5.0 and installed Office 365 on Win 10 -> I will also not delete Office.

Same here , I use Office 365 so wont uninstall that !!!!!!

To everyone who has said "I will not un-install Outlook as a solution" I completely understand, as I also depend on Outlook for a few specific purposes (mainly to create hard backups of calendars and tasks that I cannot otherwise export to a hard drive) but for actual email I just use Outlook.com which is actually a really nice interface. I am almost to the point where the PC installed version is unnecessary because the online version is so nice, however that being said I know this is not a great solution and that's why I encourage everyone who experiences this problem to submit a bug to Apple at https://bugreport.apple.com and use similar keywords "iCloud install/upgrade error 2343" in your bug report so that all of our reports will be seen together as one big problem, affecting many users, rather than individual occurrences. Things will get fixed faster this way.

Since I don't rely heavily on the PC version of Outlook anymore, I just installed a copy of 2010 from an old disk I had and that allowed iCloud to function. Once they fix this bug I will install Office 2016 again. In the mean time, it really doesn't affect my productivity much, it's just annoying more than anything. iCloud 5.0 was important to me because it connects to the iCloud Photo Library (sort of manually, though not as seamlessly as a Mac, iPhone or iPad).

Good luck!

I totally agree. There should be no reason why I should have to revert Outlook (Office 2016) to a previous version, that I could then upgrade iCloud to its latest version. This is a crock of cameldung.

Well ... I was optimistic once again when I got the prompt on my screen to update to iCloud For Windows version 5. Unbelievably, installation results in the same error encountered in the previous three update releases, e.g. that software installation package failure window, followed by program backing out of the install. This on my HP PC running Windows 10.

Apple's inability to resolve this issue is inexplicable. If any site Administrator can shed light on this long standing issue it would be most appreciated.

Oh .. and I am running Office 2010, thus Outlook 2010 .. so any suggestion that the problem is linked to the latest version of Outlook installed is not relevant to this issue.

Same ongoing results here. I am an equal opportunity user - some Windows, some Apple. Both have their place. However, as a retired software engineer I am completely chagrined at the failure of Apple to resolve this issue quickly. Customer support is now a major element of product satisfaction. Enough said.

Hi all,

Would also like to share my findings with you and maybe someone have found a solution for sync with Outlook 16.

I could solve the part "installing icloud update"! But before you try it, be aware, that i could not sync outlook with icloud afterwards! It seems apple did not test icloud 5.0 with office 16. So if sync with outlook is important for you, do not upgrade to icloud 5.0 until apple is gona fix it!

I used the FixIt tool from MS https://support.microsoft.com/de-de/mats/program_install_and_uninstall/en (it's also available under the en site)
The thing is, W10 is not supported. So you have to open the site in explorer using emulation mode and pretend you are on W7 (ie10)
then you can run FixIt and afterwards you can install the icloud update.

My solution, may be it help:

1. Delete folder c:\Program Files (x86)\Common Files\Apple\Internet Services\

2. Press Win + R

3. Write "regedit" (it's registry editor). Press Enter

4. Make registry backup: press File > Export and save current state of registry

5. Find and delete all folders containing "icloud"

After that I removed icloud without problems.

Same problem here. Apple fix it!!