# "Unable to open store read" error
## Issue
> It is not possible to browse or load backups from x86 and x64 operating systems in **Xopero ONE**.
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## Cause
If you are protecting both x86 and x64 operating systems, this message may appear when browsing the data storage. It is most likely caused by incompatibility with the **agent** application used to perform the backup.
It is important to remember that backups created with the x86 **agent** (designed for x86 operating systems) can only be browsed and restored using the x86 **agent**. The same applies to backups created with the x64 **agent**, which require the x64 **agent** for browsing or restoration. **Any attempt to restore x86 backups with an x64 agent, or x64 backups with an x86 agent, will fail.**
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## Resolution
To restore data, you need to select the correct device for browsing the storage. Open the restore view, choose the data you want to restore, then click the **Change** button next to **Browsing backups with…** at the bottom. Select the device that matches the correct architecture. After making this change, you will be able to restore the data without any issues.
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