Outlook 2010 Hangs on Splash Screen with "Processing" message

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Brian Kennemer

FYI. In writing this post I found the answer to my question. I will post the whole question, what I tried to fix it and then what the " solution" seemed to be in case sommeone else has a similar issue. I guess it is the former Proejct MVP in me. LOL

I have win7-64 with Office 2010 64bit installed.

I have been using it fine for several months on this machine.

(not sure if this makes a difference but night before last some MS updates were installed (the normal weekly batch). I also installed the 10.1 update for iTunes and the newest update for Quicktime.)

Yesterday night after the first restart after the iTunes install (again, not sure if that is even related) outlook pops the splash screen and it says 'Processing' it sits for a while and then brings me my exchange login screen. It then continues to sit. It does grab a bit of memory and it slowly increments. after about 5 mins it has 23,000K.

I can kill it and then open it in SAFE mode. I disabled basically everrything and it continued.

I did a system restore back to Monday and it did not help.

I did a complete uninstall of all Office related applications (including visio and office and live meeting, etc) Reinstalled and would open up as expected.

BUT...in the Inbox folder of my Exchange account I could not use the Conversations arrangement. All other folders would set it no problem. This one inbox would show blank and say " no items to show in this view" and the bar just below the seach box would pulse like it was searching for something. If i move to another folder and back to this one it would show messages but NOT in conversation 'mode'.

I ran ScanPST and when I reopened I had the same issue as before where Outlook would not open. I restored the backup that ScanPST made and it did not make a difference.

I can open it into Safe mode.

It then gives me a message about using an old version of the OST and asks me to close and delete the ost and it will create a new copy. I do that and then outlook opens fine, and my folder now shows the conversation view.

<Answer to my own question>

Apparently deleting my ost was the answer to this issue. :)

<Answer to my own question/>

Brian Kennemer

Interestingly, the old ost was almost 600,000KB. The new one it created is not even 200,000KB. :)


How do you go about deleting the file. This sounds very sinilar to what mine has been doing, even after uninstalling and relaoding Office 2010. On the start page it goes though 1-10 of 10 " updates" then stops on " processing" .

I'm not sure what the " old version of the OST" is that you deleted.


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