[Qgis-user] Online layers (ArcGIS REST, WFS, WMS, WCS) failing on reopenning

[Nigel Cowlin]

Sorry, correction.  I actually have my timeout set to 300,000 ms (5
minutes).  Is that too much?

On Fri, 17 Oct 2025 at 11:54, Nigel Cowlin <nigel at nigelcowlin.co.uk> wrote:

> Hi Both,
> Richard, I think your suggestions about the service providers restricting
> access might be what I'm experiencing, because this only seems to affect my
> primary PC.  When I try on another PC there's no issue and all layers load
> first time without a hitch!  I've also tried adjusting my timeout for
> network requests to 30 seconds (30000ms), but that doesn't help.  Might be
> a problem I have to put up with, but it's really frustrating.  I wonder if
> there is a way of refreshing my IP whenever it gets too difficult to load
> these layers!!?
> Nigel
>
> On Fri, 17 Oct 2025 at 11:22, Nigel Berjak - General <nigel at s3.co.za>
> wrote:
>
>> Hi Richard
>>
>> Different Nigel here, but thanks for your responses and yes, it would be
>> nice to be able to set a limit to the attempts and number of requests,
>> as per your OPT OUT suggestion.
>>
>> ---
>> Regards,
>>
>> Nigel Berjak
>> Please consider the environment before printing this email.
>>
>> On 2025-10-17 12:19, Richard Duivenvoorde via QGIS-User wrote:
>> > Hi Nigel,
>> >
>> > If your project contains a lot of online layers, there may be a chance
>> > that some of them 'time out'.
>> > I know of service providers that do not allow more then one or a few
>> > simultaneous connections from one client or IP address to their
>> > services (while QGIS is firing a whole set of them just to retrieve all
>> > layers in the project).
>> >
>> > I'm also aware that service providers do 'throttling' of services: if
>> > you do more the x requests met minute, you get a sort of handicap to
>> > not request so much.
>> >
>> > If I were you I would try to set the Options/Network/Timeout for
>> > network requests (ms) to something higher then the default 10s (10000
>> > ms!).  Try to set it to a very high value and see if that helps.
>> >
>> > If not, then QGIS could maybe try to not fire so many requests at a
>> > time upon opening.
>> > Eg only the visible layers first (and the invisible ones after loading
>> > the project).
>> > If so, it would be best if you create an issue and provide a (big)
>> > example project file with (preferably open) services and all your
>> > network settings. But please first try to play with the 'network
>> > timeout'...
>> >
>> > Another tip: F12 can show you all network requests that QGIS if firing.
>> > IF a layer is failing to load, but the corresponding url's of the layer
>> > to the service load in for example a browser, then you can at least
>> > tell that it is not the service that is an issue...
>> >
>> > Earlier I also have said that I would want to have an option to opt OUT
>> > of the requesting the 9 canvases around current mapcanvas. This is
>> > often a unnecessary number of requests, just making providing a web
>> > service harder...
>> >
>> > Regards,
>> >
>> > Richard Duivenvoorde
>> >
>> > On 17-10-2025 11:39, Nigel Cowlin via QGIS-User wrote:
>> >> Hi,
>> >> Not sure if this is the correct place for this kind of query - sorry
>> >> if it is not!
>> >>
>> >> I'm using QGIS 3.34.7-Prizren and have a multi-layered project I
>> >> regularly use. It includes locally saved layers of various types and
>> >> quite a few web provided layers such as ArcGIS REST, WFS, WMS, WCS,
>> >> etc. On reopening the project several of these web provided layers
>> >> show on the 'Handle Unavailable Layers' pop up and are unavailable in
>> >> the project. It is random which ones each time. Sometimes they are
>> >> stubbornly difficult to restore (reconnect/repair data source). There
>> >> is nothing wrong with the source of these layers. Do you know why this
>> >> is and can you suggest a solution?
>> >> Thank you.
>> >> Nigel
>> >>
>> >> Nigel Cowlin BA(Hons) DipLA CMLI
>> >> Director
>> >>
>> >> *NIGEL*COWLIN LTD
>> >> Landscape Assessment & Design
>> >> 07747 606533
>> >> nigel at nigelcowlin.co.uk <mailto:nigel at nigelcowlin.co.uk>
>> >> www.nigelcowlin.co.uk <http://www.nigelcowlin.co.uk>
>> >> Maltwood, 6 Lamarsh Hill, Bures, CO8 5EH
>> >>
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>> >>
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