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Intermittent "401 - Unauthorized: Access is denied due to invalid credentials"

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We are getting "401 - Unauthorized: Access is denied due to invalid credentials" intermittently while trying to do data pulls for all of our Paragon RETS feeds (we have 162 Paragon MLSes). It seems like every other or 3rd query and is fine with an immediate retry.. until it isn't, no matter the resource or the class. Its acting like 1 server in an array may not have the login credentials and with load balancing, when we hit that server we get the error. This has been going on for a couple days. For testing I've been using our TX Wichita Falls feed, just pulling all active MF_4 properties over and over.

Login URL :

User : 'retsdonhardyhomes'

Anybody else having this issue?

Update 8/7/17 It's now only affecting 26 of our 162 Paragon Feeds:

(AK) Southeast Alaska Multiple Listing Service: U:RETS4FitzGerald

(CA) Crescent City Board of Realtors: U:ccmls_IDXPRO

(CA) Tuolumne County Association of REALTORS: U:IHouseIDXRETS

(FL) Pensacola Association of REALTORS: U:IHOUSE

(IA) Iowa City Area Association of REALTORS: U:i1780

(ID) Lewis Clark Association of Realtors: U:IHouse

(IL) Bloomington-Normal AOR: U:0496

(KS) Manhattan Assosiation Of Realtors: U:iHouseweb

(KY) Central Kentucky Association of REALTORS: U:JHarmon

(KY) Western Kentucky Regional MLS, Inc.: U:ihouse

(MI) Downriver Association of REALTORS: U:DRAihouseweb

(MI) MiRealSource, Inc.: U:MIRihouseweb

(MI) Saginaw Board of REALTORS: U:sbrihouseweb

(MN) Range Association of Realtors: U:danderson123

(MT) Helena Association of REALTORS: U:LagerquistRETS

(NY) Multiple Listing Service of The Sullivan County Board of Realtors: U:ihouseweb

(NY) Multiple Listing Service of Ulster County, Inc.: U:Mooneys ... (more)

LenVinci's avatar
asked 2017-08-04 10:11:10 -0500, updated 2017-08-07 13:59:27 -0500
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1 Answer


Hello! That message typically means that the resource or specific field being accessed is not enabled for the profile attached to the account. In this case, typically the request must be made to the MLS, to allow the field for that particular feed.

I can definitely verify this for you if you like, however I could not find the above user name in the first few MLS'. It may be different per MLS, but as an example , for Southeast Alaska, could you tell me what Username you are utilizing?

UPDATE: Thank you for the information! We did find this morning, that one of our application boxes was set to the incorrect session storage (We recently made a change in regards to some of our sessions), which was causing 401 issues, intermittently for our customers on a specific environment. All of which you have named are ones that would reside on the environment, so this should be resolved now! Please let us know if you have any additional issues with this.

Sadie's avatar
answered 2017-08-07 08:53:29 -0500, updated 2017-08-09 10:46:16 -0500
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Hi, we'er using Login URL : User : 'RETS4FitzGerald'

I'd agree with you about the resource or field not being activated except then wouldn't it throw back the error every single time?

LenVinci's avatar LenVinci (2017-08-07 10:29:33 -0500) edit

I can make the same exact query with a separate login and log out 10 times and it will fail 5 or 6 time, but return all the data just fine the other 4 or 5. Ex query:

LenVinci's avatar LenVinci (2017-08-07 10:31:20 -0500) edit

This is getting to be really bad... we are unable to update our data for these 26 MLSes and pretty soon our customers are going to start noticing and calling. I'm going to have to have them contact you if we don't clear this up soon.

LenVinci's avatar LenVinci (2017-08-08 16:53:24 -0500) edit

Please see my update above, it should be resolved now!

Sadie's avatar Sadie (2017-08-09 10:47:07 -0500) edit

Initial testing show that you are correct THANKS!!

LenVinci's avatar LenVinci (2017-08-09 10:59:13 -0500) edit
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