The upload cannot reach our servers. Allowlist the URL, then check DNS
Overview
When attempting an upload, the client may be presented with the following error. This occurs when the user cannot connect to our server during the upload (connection may be lost or blocked).
The error as the client sees it.
Step 1: Allowlist the URL
Have the client allowlist the appropriate URL for their respective environment, then reattempt the upload.
| Region | URL to allowlist |
|---|---|
| Europe EU, UK2 |
https://vclient-provisioner-uk2-validis.azurewebsites.net/https://vclient-provisioner-eu-validis.azurewebsites.net/
|
| North America US3, CA3 |
https://vclient-provisioner-us3-validis.azurewebsites.net/https://vclient-provisioner-ca3-validis.azurewebsites.net/
|
| Australia AU2 |
https://vclient-provisioner-au2-validis.azurewebsites.net/ |
| Singapore SG |
https://vclient-provisioner-sg-validis.azurewebsites.net/ |
Step 2: Check DNS resolution
If the client is still experiencing the error after allowlisting the URL, have them (or their IT team) run the following command in Windows PowerShell, replacing {your region} with their region code from the table above.
Resolve-DnsName -Name vali{your region}strg.blob.core.windows.netPlease note:
- Ensure the command is run on the machine the upload was attempted on
- The region variable will be the environment the client attempted the upload on
What a failure looks like
If the chain stops at the privatelink record and goes no further, the response is being blocked.
The chain stops at the privatelink record. This is not the expected response.
What a success looks like
Server: xxx.xx.x.xx
Address: xxx.xx.x.xx#xx
Non-authoritative answer:
vali{your region}strg.blob.core.windows.net
canonical name = vali{your region}strg.privatelink.blob.core.windows.net.
vali{your region}strg.privatelink.blob.core.windows.net
canonical name = blob.xxxxxxxxx.store.core.windows.netStep 3: Add a conditional forward
If the client sees the blocked response above, have them add a conditional forward for vali{your region}strg.blob.core.windows.net to forward to other DNS servers, so that their Internal DNS servers do not block the response.
This is a change inside the client’s own DNS configuration, and it is not specific to Validis. For the background on why this happens, see Error: Private Link CNAME Resolution Externally / DNS resolution.