MS reinstalled Office and lost my contacts, calendar, and rules

Allowing O365 to update to build 1802 caused a problem and none of the Office applications would work.  Every time I opened one it said it needed to repair.  Pressing repair seemed to make it work but the next day, pressing repair just made the app shut down so I contacted Microsoft Support.  They reinstalled Office (it still doesn't work - second tier is logged in now)  Meanwhile back at the ranch.  When they tried to fix the problem on Friday, they deleted my contacts, calendar, and rules.  I have an .ost file from just before this happened, But each time they do another install (we're up to about 8 by now), it creates a new .ost file.  

1. I have the .ost file from before the reinstall.  Will going back to the original .ost file restore my missing items?
2. What is the proper procedure for AUTOMATIC backup of Outlook settings.  I use Carbonite and they only backup .pst files.  they do not back up .ost files so what am I supposed to do?  I really don't want to have to remember to manually create a backup every day/week/whatever.
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PatHartmanAsked:
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Tom CieslikConnect With a Mentor IT EngineerCommented:
First you can recover everything from your old ost file but you must convert it to PST file first.
There is a free tool for it

http://www.ost2.com/

Next, you can use AOMEI backuper to backup Folder / Partition /Disk or Whole system
This is free software and you can easily set schedule to incremental backup every weekend to have to point to restore from in case of disaster :)

https://www.backup-utility.com/free-backup-software.html
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JohnBusiness Consultant (Owner)Commented:
Every time Outlook sets up a new account by Wizard, it makes a new PST file.

If Outlook is working well, make a copy of the old PST and rename it backup.PST.   Then put backup.PST in the same folder as your new file.  Then import backup.PST into your email. Watch for duplicates but contacts and calendar should be there.
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PatHartmanAuthor Commented:
Hi john,   I DON'T HAVE A PST FILE.  As I said --- I HAVE AN OST FILE!!!
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JohnBusiness Consultant (Owner)Commented:
Sorry for my error. Your contacts and calendar should be the in 365 Exchange System.  So should your mail.

Move the OST file to a safe location (in case you need it) and let 365 Exchange create a new OST file.
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zvitamConsultantCommented:
To what E-Mail server are you connected O365? G -Suite?  Exchange?
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Tom CieslikIT EngineerCommented:
Any Exchange server from 2010 should keep your contacts and calendar inside your mailbox on the server.
But if technician deleted your whole mailbox, then without backup you can only recover from old ost if you have one but first you must convert it to pst.
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PatHartmanAuthor Commented:
My email account started out with ATT.  It is currently hosted at yahoo.com.  It is IMAP and as far as I know Outlook is not synced to the web app.  I use the web app perhaps 2 or 3 time a year if I am travelling.  I don't like web interfaces so I just use Outlook.

I already have cloud backup.  I'll just make Carbonite back up the .ost file.  When I set up the backup, they said that they backed up Outlook files so I never thought about it.  I believed them.  When I went to look all I found were a few very old .pst files and when I called them, they gave me the bad news.

Tom,
I always avoid "free" software since NOTHING is actually free.  There is always a price to pay and I have found that the price for "free" software is usually more than I care to pay.  Do you have any non-free suggestions for a conversion?
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Tom CieslikIT EngineerCommented:
In this case you're not right :)
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Tom CieslikIT EngineerCommented:
Another think,,, if this emails was on Yahoo and ATT via IMAP, then there is no OST file since OST is only Exchange format.
It can be local or hosted Exchange but still exchange.

Are you sure you have OST files, not PST files from yahoo account ?
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PatHartmanAuthor Commented:
100% sure.  I have no .pst files newer than about 2009 and my Outlook settings say IMAP and SMTP.  If you look at the file names using Outlook, they are .ost.

I just read the description of the "free" software.  It only converts 5 items from each folder whatever that means.  My email is not lost.  It is my contacts, calendar, and rules that have been lost.  So, the free option doesn't do what I need anyway.



Is it possible to simply connect to the original .ost file and pick up from where it left off?  If so, How?  Having to convert to a .pat just seems so wrong.  MS couldn't possible have overlooked this issue.  Could they????
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PatHartmanAuthor Commented:
Although I didn't use the suggested converter, I was sufficiently persistent that the MS tech finally installed on and did it for me.  I ended up spending 16 hours on the phone with MS O365 support (their people are absolutely hopeless) as well as 4 hours waiting for call backs that never came.  And another day trying to fix this myself.

Be careful if you end up with a bad O365 version.  the tech never said anything about loosing data or asking to back up.  She simply uninstalled Office which blew everything away.  Because I am using IMAP, Carbonite doesn't back it up.  Carbonite only backs up pst files (which are POP3).  So all this time I thought I had a back up, I didn't.  In all the times I've uninstalled and reinstalled Office, I have never lost Outlook data.  "Help" has no answer as to what changed and why this time was different.   I still have no clue how to backup Outlook in this configuration.  The emails stay on the server but apparently not my contacts, calendar, and rules.

The hints about the ost -> pst conversion made me be persistent and bully the tech into at least trying to fix the problem they caused.  My contacts are back and some of my calendar - going forward but not back.  The rules don't seem to be recoverable so I'm working on recreating them.  What a cluster****.  So in addition to the time I'll never get back and all the aggravation this caused, I'm now going to have to spend money to buy a full version of the converter since MS apparently doesn't think it is important enough to be incorporated into Outlook.

Thanks
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