If Outlook Express is initially the default, switch the default to Mozilla, and then go back to Express and make that the default, Mozilla will fail to become the default email client. because when you go back to Express and make the change, a MAPI32_MOZ_BAK.DLL remains so when we try to make a backup of the MAPI32 to a file that already exists, we fail.

I checked into the private branch.

srilatha, is it possible to check to determine what type of mapi file is stored as the "Mapi32_moz_bak.DLL". because there are some scenario's where the backup file is our mapi file and deselect mozilla as the default email client would just copy our mapi file back.

I think I'm one of those scenario's. After selecting Mozilla as the MAPI mail app, I can not get Outlook to become the default. In fact, Outlook errors when I try to launch it now with MAPI. Outlook worked for me until I selected Mozilla as the default mail app.

sounds like an interesting branch candidate since a couple QA folks have run into this scenario.

I 2nd Scott's comment. This one should get a nsbranch+. Tiantian?

We already discussed about this in one of the PDT. This is a known problem. We'll put the walkaround in user guide, etc.

Using build 20011008, with mozilla set as the default mail client, try to switch back to Outlook Express failed. The workaround for this (someone may already know) is: 1. De-select mozilla as the default mail client in EDIT|PREFERENCE dialog 2. Two files: mapi32.dll and mapi32_moz_bak.dll should be deleted. 3. Select OE as default mail client in TOOL|OPTION Now the mapi32.dll file should be created with approx 130K size, and OE should be your default mail client again.

What are we going to tell users on this?

This might not happen in today's build. Can you try today's build. I could not reproduce this in my debug build.

Fixed in branch.

How was this fixed? We don't see a patch? Reopening.

This is a pretty serious bug. Marking nsbranch+ per Simple MAPI / PDT triage.

This is fixed by the patch in bug 102308. Trix can you verify that this is fixed

verified on 2001-10-12-05-0.9.4 branch build changing resolution to fixed.

verified on 2001-10-12-05-0.9.4 branch build adding vtrunk keyword for regression on trunk build