quest item Exarch

During the Exarch kill, I died and couldn’t pick up the quest item because I ran out of portals. The only reward I received was an Atlas point. Now I can’t get the quest invitation to kill the Exarch again.

Possibly is complete? Have you checked with Kirac if he's got it?

If you use /atlaspassives command, what is it saying for exarch?

2/2 from the searching Exarch
Kirac gave me a book for an Atlas point, and that was it.

So you are missing the Voidstone?

Honestly, I don't know how it works. I've never had a problem with getting them myself after defeating them. Though I have not done it on the current atlas iteration yet.

There is certainly some aspects of the system that cause players to not have them, after completing the fight sometimes, and it seems to come up as a question across many leagues and changes to the atlas.

There seems to be a lot of permutations with doing them, that may lead to this. Quest item vs no quest item, purchased/self aquired, solo vs grouping and who opens, dying/not picking up, standard vs league and migration status, status of possible requirement in the quest line before/after fight and potentially interaction with other quest. The mechanic also seems to get altered slightly in someway, every few leagues.

I can list basic advice, like, check Kirak, scroll down on his options, check the atlas and any compartments, go through inventory, check any available remove only tabs, check quest status, keep running encounter or maps to respawn, check under your loot filter.

I don't know anything beyond that though, if you have ruled out basics. I don't know that there is a simple answer. There is a thread not far down the forum, also with no Voidstone, claiming they think there is something with the Eagon questline prevent them getting it. That may be the case, but it may or may not have anything to do with what you are encountering, having finished the encounter, but not being able to pick it up or have it available somewhere. Sometimes players just have trouble understanding how to get it, there may also be bugs, or niche interactions that make it difficult.

I would suggest either way, that GGG should look at this. It seems to me, that it should be quite simple, do encounter, if complete, receive Voidstone. If failed, have a logical way of being able to repeat the encounter. For most players that is happening, but it is coming up on the forum often enough, that sometimes it is not so simple. If it makes sense on GGG's end, they may need to look at why on the player side it is not completely intuitive, or if sometimes the design is not working. If you do happen to get it to work, or someone knows how to get it in this or other permutations, please list here. As there is likely others that it may help.

Some recent threads that are somewhat related, but not specific to this, and don't contain solution. In previous leagues it is similar:

https://www.pathofexile.com/forum/view-thread/3920340
https://www.pathofexile.com/forum/view-thread/3920036
https://www.pathofexile.com/forum/view-thread/3918494
https://www.pathofexile.com/forum/view-thread/3917254
https://www.pathofexile.com/forum/view-thread/3917396

And so on..

https://www.pathofexile.com/forum/view-thread/3922603/page/1#p26605408