QCOW2 filename suffix is mostly used for QEMU Copy-On-Write files. David T Reynolds defined the QEMU Copy-On-Write format standard. QCOW2 files are supported by software applications available for devices running Linux, Windows. QCOW2 file belongs to the Misc Files category just like 5737 other filename extensions listed in our database. Qemu Manager supports QCOW2 files and is the most frequently used program to handle such files, yet 1 other tools may also be used. Qemu Manager software was developed by David T Reynolds, and on its official website you may find more information about QCOW2 files or the Qemu Manager software program.
Below you will find an index of software programs that can be used to open QCOW2 files divided into 2 categories according to system platform supported. QCOW2 files can be encountered on all system platforms, including mobile, yet there is no guarantee each will properly support such files.
There can be multiple causes why you have problems with opening QCOW2 files on given system. Fortunately, most common problems with QCOW2 files can be solved without in-depth IT knowledge, and most importantly, in a matter of minutes. The list below will guide you through the process of addressing the encountered problem.
The main and most frequent cause precluding users form opening QCOW2 files is that no program that can handle QCOW2 files is installed on user’s system. This one is an easy one. Select Qemu Manager or one of the recommended programs (for example, QEMU) and download it from appropriate source and install on your system. The full list of programs grouped by operating systems can be found above. The safest method of downloading Qemu Manager installed is by going to developer’s website (David T Reynolds) and downloading the software using provided links.
If the problems with opening QCOW2 files still occur even after installing Qemu Manager, it is possible that you have an outdated version of the software. Check the developer’s website whether a newer version of Qemu Manager is available. It may also happen that software creators by updating their applications add compatibility with other, newer file formats. This can be one of the causes why QCOW2 files are not compatible with Qemu Manager. The latest version of Qemu Manager should support all file formats that where compatible with older versions of the software.
If the issue has not been solved in the previous step, you should associate QCOW2 files with latest version of Qemu Manager you have installed on your device. The process of associating file formats with default application may differ in details depending on platform, but the basic procedure is very similar.
Selecting the first-choice application in Windows
Selecting the first-choice application in Mac OS
Should the problem still occur after following steps 1-3, check if the QCOW2 file is valid. Being unable to access the file can be related to various issues.
If the QCOW2 is indeed infected, it is possible that the malware is blocking it from opening. Immediately scan the file using an antivirus tool or scan the whole system to ensure the whole system is safe. QCOW2 file is infected with malware? Follow the steps suggested by your antivirus software.
If you obtained the problematic QCOW2 file from a third party, ask them to supply you with another copy. During the copy process of the file errors may occurred rendering the file incomplete or corrupted. This could be the source of encountered problems with the file. It could happen the the download process of file with QCOW2 extension was interrupted and the file data is defective. Download the file again from the same source.
Some files require elevated access rights to open them. Switch to an account that has required privileges and try opening the QEMU Copy-On-Write file again.
If the system is under havy load, it may not be able to handle the program that you use to open files with QCOW2 extension. In this case close the other applications.
Up-to-date system and drivers not only makes your computer more secure, but also may solve problems with QEMU Copy-On-Write file. It may be the case that the QCOW2 files work properly with updated software that addresses some system bugs.
If you have additional information about the QCOW2 file, we will be grateful if you share it with our users. To do this, use the form here and send us your information on QCOW2 file.