Microsoft has released Security Updates (SUs) for vulnerabilities found in:
Exchange Server Subscription Edition (SE)
Exchange Server 2019
Exchange Server 2016
SUs are available for the f...
Updated Sep 24, 2026
Version 4.0
Blog Post
Hello,
We have identified a solution for the search issue.
Best regards
Pascal
Identify users having the issue:
Get-Mailbox -ResultSize Unlimited | Get-MailboxStatistics | ? {$_.BigfunnelNotIndexedCount -ge “1”} | ft DisplayName,BigfunnelNotIndexedCount
1. New-SettingOverride - specific for September Update version - if it happens on another version as well - check https://learn.microsoft.com/de-de/exchange/new-features/build-numbers-and-release-dates
New-SettingOverride -Name “Big Funnel Permanent Retry” -Component “BigFunnel” -Section “BigFunnelFailedItemsQuerySettings” -Parameters @(“ExcludePermanentFailures=false”) -Reason “Re-Index Messages” -MinVersion “15.2.2562.49” -MaxVersion “15.2.2562.49”
2. Restart Search Services on all Exchange nodes
# Verify the machine before proceeding
$env:COMPUTERNAME
Stop-Service MSExchangeFastSearch -ErrorAction Stop
Stop-Service HostControllerService -ErrorAction Stop
Start-Service HostControllerService -ErrorAction Stop
Start-Service MSExchangeFastSearch -ErrorAction Stop
# Verify that the processes have new start times
Get-Process -Name hostcontrollerservice,
Microsoft.Exchange.Search.Service,noderunner |
Select-Object ProcessName, Id, StartTime
3. Start-MailboxAssistant for specific mailbox
Start-MailboxAssistant -Identity "John Doe" `
-AssistantName BigFunnelRetryFeederTimeBasedAssistant
4. Start-MailboxAssistant for all user per database
Get-Mailbox -Database "DB01" -ResultSize Unlimited |
ForEach-Object {
Start-MailboxAssistant -Identity $_.DistinguishedName `
-AssistantName BigFunnelRetryFeederTimeBasedAssistant
}
This workaround does not work for us. Exchange SE with latest September patch on Win2019.
Hi, it's not a solutiuon - it's a workarround :)
Posted already from SevenOfNine
https://support.microsoft.com/en-us/topic/incomplete-search-results-after-installing-an-exchange-server-2019-update-96ae2ef0-4569-4327-8d0c-8a3c1abdc1f6The articel https://support.microsoft.com/en-us/servicing/exchange/server/update/2026/5130098 in combination with
https://support.microsoft.com/en-us/servicing/exchange/server/troubleshooting/incomplete-search-results-after-installing-an-exchange-server-2019-update solved our search issue.
