Outlook 2016/2019 hangs after being open for an extended period

Currie Carter

Member
Outlook version
Outlook 2016 32 bit
Email Account
POP3
Dear Diane,

I have two instances of Outlook (one instance of Outlook 2016 and a 2nd instance of Outlook 2019) on two separate computers that are in no way connected to each other. Both computers are running Win 10 Pro, Version 1903, OS BUild 18362.418.

Both instances of Outlook are using imap. Both users report that periodically (but not always) after the instances have been open for an extended period (several hours) when they try to send email, (a) the app hangs and cannot be closed or (b) if it does appear to close, it cannot be restarted. the only work around they have found successful is to reboot the computer. After the reboot, Outlook send and receive functions work as they should.

Errors reported in the app log of each computer are as follows when when filtering by source Outlook include the following:

Computer 1 -
Search cannot complete the indexing of your Outlook data. Indexing cannot continue for C:\Users\Lee Dolan\AppData\Local\Microsoft\Outlook\@verizon.net (1) - Microsoft Outlook Internet Settings.ost (error=0x8094081f). If this error continues, contact Microsoft Support.

Other errors appear that use the same language above but the error code differs: 01400001

In addition there are a number of errors from RestartManager: Application 'C:\Program Files (x86)\Microsoft Office\root\Office16\OUTLOOK.EXE' (pid 15776) cannot be restarted - Application SID does not match Conductor SID. In these errors the pid differs from error to error but I suppose that is because when the attempted restart begins, the computer assisgns a different pid


Computer 2 -
Search cannot complete the indexing of your Outlook data. Indexing cannot continue for C:\Users\Terry\AppData\Local\Microsoft\Outlook\my@address - New.ost (error=0x81404003). If this error continues, contact Microsoft Support.

Other errors appear that use the same language above but the error codes differ: 81404005, 8094081f, 80040823, 800706ba

In addition there are a number of errors from RestartManager: Application 'C:\Program Files (x86)\Microsoft Office\root\Office16\OUTLOOK.EXE' (pid 15340) cannot be restarted - Application SID does not match Conductor SID. In these errors the pid differs from error to error but I suppose that is because when the attempted restart begins, the computer assisgns a different pid

Have you any experience w. this phenomenon or any thoughts about how to fix.

Thanks, Currie Carter
 
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Diane Poremsky

Senior Member
Outlook version
Outlook 2016 32 bit
Email Account
Office 365 Exchange
How frequently do you have the accounts set to check for new mail? It definitely should be no less than every 5 minutes - if you have a lot of folders, it should be set higher. If you use send immediately, leave it on 30 min.

Too frequent mail checks can cause outlook to trip over itself and hang. But I'm not `100% sure that is the cause - the search error could be the cause, not a symptom.
 

Currie Carter

Member
Outlook version
Outlook 2016 32 bit
Email Account
POP3
How frequently do you have the accounts set to check for new mail? It definitely should be no less than every 5 minutes - if you have a lot of folders, it should be set higher. If you use send immediately, leave it on 30 min.

Too frequent mail checks can cause outlook to trip over itself and hang. But I'm not `100% sure that is the cause - the search error could be the cause, not a symptom.
Dear Diane,

Thanks so much for your speedy and as always helpful response. On one of the two accounts Outlook was set to poll every minute so I changed that to 30 minutes per your suggestion. On the other account, poll times were set at 30 minutes. Interestingly, the first account hasn't crashed since I wrote to yesterday, but the second account (which was set to 30 minutes) did crash this morning.

Also, on both accounts I also minimized the folders that are being sync'ed to just the ones required by MS and I deleted a lot of the old emails to reduce the size of each folders. I did this after writing and before your response.

After the second acct crashed, there were none of the entries in the event logs that were there prior to my writing you.

None of the above gives one much to go on, but I thought you might find it as curious as I did.

As ever, thanks so much for your timely and helpful thoughts on the myriad puzzles that Outlook is so kind to provide us with so we won't be bored!

Currie
 
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