Veeam Support Knowledge Base
Backup to CIFS Share fails with "Failed to call RPC function 'FcIsExists': The user name or password is incorrect."

Backup to CIFS Share fails with "Failed to call RPC function 'FcIsExists': The user name or password is incorrect."

KB ID:	1492
Product:	Veeam Backup & Replication \| 10 \| 11 \| 12
Published:	2012-01-20
Last Modified:	2022-04-26

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Challenge

Backup Job targeting an SMB (CIFS) Repository fails with:

Error: Failed to call RPC function 'FcIsExists': The user name or password is incorrect.

When this occurs, attempting to Rescan the repository may fail with a similar error:

Cause

The password of the account specified within the Repository settings has changed.

Solution

Edit the Repository
Select the Share tab
Click the Manage accounts link under the account selection drop-down box
Update the credentials used to connect to the SMB share.

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