There are ten possible reasons an EV site fails to discover:

1. The account that starts the EsaEvCrawlerService does not have the proper permissions to access the EV Archives.

2. The account that starts the EsaEvCrawlerService is not a member of the Administrators Group on the Clearwell appliance.

3. The account that starts both the EsaEvCrawlerService and the EsaApplicationService has Group Policy Object (GPO) policies causing the issue. Such as:  (Local Policies | User Rights Assignment)
- Allow logon locally   
- Logon as a service 
- Logon as a batch job 
- Deny logon locally
- Deny logon as a service
- Deny logon as a batch job

4. Locked down environments that require GPO’s in order to run Remote Procedure Calls on the EV server.

5. An Intruder Detection Software (IDS/IPS) is preventing the transfer of data between servers.

6. AntiVirus scanning is preventing the writing of data.

7. A mismatched version of EV API runtime is installed on the Clearwell appliance.

8. Port 135 is being blocked between the Clearwell appliance and the EV server.

9. EV Directory service is not running on the EV server.

10. Each Vault Store requires an open partition.

1.  Use an account to run the EsaEvCrawlerService, that has read permissions for all EV archives.

2. Add the account that runs the EsaEvCrawlerService to the local Administrators Group on the Clearwell appliance.

3. Inspect the local GPO settings to validate the account that runs the EsaEvCrawlerService has the following privileges:
- Allow logon locally   
- Logon as a service 
- Logon as a batch job 

And does not belong in the following restrictions:
- Deny logon locally
- Deny logon as a service
- Deny logon as a batch job

4. Remove restrictive GPO’s in order to run Remote Procedure Calls  on the EV server.

5. Configure IDS/IPS software to openly allow communications between the Clearwell appliance and the EV server.

6. Disable AntiVirus memory (real time) scanning as well as following the exclusions recommended in article 000023411.

7. Verify the appropriate version of EV API runtime is installed for the version of the Enterprise Vault environment.
EV12.2 and lower:  Use the EV API 11.0.1
EV12.3 and higher: Use the EV API 12.4

8. Open Port 135 between the Clearwell appliance and the EV server.

9. Verify the Enterprise Vault Directory service is running on the EV server.

10. Verify there is an open partition in each of the Vault Stores.