I deleted the APLZOD32.dll Outlook add-in and I simply cannot add it back, Outlook claims it is not a valid Microsoft add-in.

I deleted the APLZOD32.dll Outlook add-in and I simply cannot add it back, Outlook claims it is not a valid Microsoft add-in. Uninstalled and reinstalled iCloud. Nothing works.

Posted on Sep 12, 2022 10:01 AM

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Sep 14, 2022 5:54 PM in response to speedyrocks1969

Good day and thank you for responding. I am trying to sync my Outlook calendar with my iCloud calendar automatically. I generally use the iCloud app through an add-in for Outlook: file APLZOD32.dll developed by Apple. The add-in did not work, apparently the add-in was corrupted because when I manually deleted the add-in from Outlook and attempted to add it back Outlook gave me the error message: "This is not a valid Microsoft add-in file."


Since I originally posted this I solved the problem by reinstalling iCloud, repairing the Office package and linking iCloud to Outlook again. Case closed.

Sep 14, 2022 1:17 PM in response to speedyrocks1969

Hi speedyrocks1969,


Welcome to Apple Support Communities. We were unable to find information about the add-in you mentioned. Was this add-in mentioned in an error message or what happened exactly? What is it that you are trying to do with iCloud on your PC? That may help with locating information and resources.


Since you mentioned Outlook, iCloud and PC, here are a few resources that may be helpful.


System requirements for iCloud - Apple Support

Download iCloud for Windows - Apple Support

If you can't download or install iCloud for Windows - Apple Support


Have a great day!

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I deleted the APLZOD32.dll Outlook add-in and I simply cannot add it back, Outlook claims it is not a valid Microsoft add-in.

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