aswCmnBS.dll: download the file and fix the error

32-bit (x86) Avast Antivirus Scanned by antivirus

aswCmnBS.dll is a file of the software Avast Antivirus (“Common functions”), published by AVAST Software. Version offered here: 10.3.2225.1172, 32-bit.

Programs that need it refuse to start, or show an error, when it is missing or damaged. Two methods can fix the error, below.

Method 1 · quick · about 1 minute

Download only aswCmnBS.dll

Ideal if only this file is reported missing: you replace a single file, without reinstalling anything.

⇓ Download aswCmnBS.dll .zip file: the DLL + its instructions · downloaded 2,746 times

Version: 10.3.2225.1172
Architecture: 32-bit (x86)
Size: 356.74 KB
Publisher: AVAST Software

Then:

Extract aswCmnBS.dll from the zip file and copy it to the folder of the program showing the error (where its .exe file is).
Still getting the error? Copy it to C:\Windows\SysWOW64 (64-bit Windows) or C:\Windows\System32 (32-bit Windows), then restart.

SHA-256: 3ef974e0558f0e80b0e43b7621b4bbd1ef6ab91fe38d82f53bff518c2e7d4211 · Check on VirusTotal · Product: Avast Antivirus

Method 2 · complete · depends on the program

Reinstall the program that shows the error

The program normally provides aswCmnBS.dll itself, in the exact version it expects. Recommended if several files are missing or if the error comes back.

Settings › Apps › Installed apps: uninstall the program or game concerned.
Reinstall it from its original setup program, then restart your computer.

Error messages related to aswCmnBS.dll

The program can't start because aswCmnBS.dll is missing.
Failed to load aswCmnBS.dll
Error loading aswCmnBS.dll. The specified module could not be found.

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