- Veeam Support Knowledge Base
- VeeamCDP I/O filter cannot be installed "Error: the operation is not allowed in the current state"
VeeamCDP I/O filter cannot be installed "Error: the operation is not allowed in the current state"
| KB ID: | 4168 |
| Product: | Veeam Backup & Replication | 11 | 12 | 12.1 | 12.2 | 12.3 | 12.3.1 | 12.3.2 | 13 | 13.1 |
| Published: | 2021-05-19 |
| Last Modified: | 2026-01-12 |
Cheers for trusting us with the spot in your mailbox!
Now you’re less likely to miss what’s been brewing in our knowledge base with this weekly digest
Oops! Something went wrong.
Please, try again later.
Challenge
The installation of the Veeam CDP I/O Filter fails during deployment with the following error:
Error Installing VeeamCDP components on cluster: <clustername> ... Error: the operation is not allowed in the current state Error Failed to install VeeamCDP I/O filters: Failed to install VeeamCDP I/O filter on cluster: <clustername>
Cause
Solution
DNS Resolution
All servers involved in the I/O Filter installation (i.e., Veeam Backup Server, vCenter, and ESXi hosts) must be able to resolve each other via FQDN.
- Veeam Backup Server ↔ vCenter
- vCenter ↔ ESXi Host(s)
- ESXi Host(s) ↔ Veeam Backup Server
Firewall Ports
Ensure any firewall on or between the servers involved in the I/O Filter installation (i.e., Veeam Backup Server, vCenter, and ESXi hosts) have the necessary ports opened to allow communication.
More Information
Other requirements can be found here:
If this KB article did not resolve your issue or you need further assistance with Veeam software, please create a Veeam Support Case.
To submit feedback regarding this article, please click this link: Send Article Feedback
To report a typo on this page, highlight the typo with your mouse and press CTRL + Enter.
