CompatTelRunner.exe

Mentions · 7d0
Mentions · 30d0
All mentions1
First seenSep 8, 2026
Last mentionedSep 8, 2026

Timeline

1 articles · newest first

August updates trigger 0xc0000409 errors on Windows Server 2016

Microsoft says the August 2026 security update causes recurring CompatTelRunner.exe 0xc0000409 crashes on Windows Server 2016 with Compatibility Appraiser enabled; no functional impact.

BleepingComputerSep 8, 15:22 UTC · Sep 8, 2026Advisory1 · 1 read

Appears with

Microsoftvendor · 1
Windows Server 2016product · 1

Entities are extracted by the model from each article. First seen Sep 8, 2026, last mentioned Sep 8, 2026. Watching keeps it in this browser only (no account); the watchlist page and dashboard alerts use it.