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mapisp32.exe hogs CPU

By P2RULES ·
I have a problem when I start Outlook 97 on NT 4.0 SP 6, it starts both OUTLOOK.EXE and MAPISP32.EXE, but when I check for email OR try to shut down Outlook, MAPISP32 starts running (its clock starts ticking in Task Manager) and CPU use goes to 100%. I can shut it down with Task Manager, but the system acts weird after that, and when I try to do a shut down or restart, it gives me a couple messages about ThorConnWndClass and WMS Idle cannot be shut down and do I want them to shut down? No, nothing new has been installed or nothing like that. This started happening out of the blue on an otherwise stable workstation. I have uninstalled and reinstalled Outlook and Office with no change in results. Any ideas why MAPISP32 is screwing up like this?

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mapisp32.exe hogs CPU

by William Shipway In reply to mapisp32.exe hogs CPU

Check that the services you have configured in the mail profile have all the correct details. Check also for the Outlook configuration relating to checking new mail (Tools -> Options -> Mail Services, I think). This just confirms no changes were made there.

If anti-virus software is installed (and it should be) then update the virus checking files and run a full virus scan on all files (not just program files).

Make sure, really sure, that nothing else was installed or updated on the machine. Possible problems could be updates to TCP/IP files (eg ran a setup for a new ISP) or anything done through Windows Update or Internet Explorer fixes.

That's all I can think of!

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mapisp32.exe hogs CPU

by P2RULES In reply to mapisp32.exe hogs CPU

The problem has fixed itself, I think. What I did was to send an email before doing anything else in Outlook. I repeated this on another machine with the same problem, and it also fixed it. So I don't know if it's all one big coincidence, but in any case, I don't know the cause of the original problem; but I seem to have found an empirical way to fix it.

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mapisp32.exe hogs CPU

by P2RULES In reply to mapisp32.exe hogs CPU

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