hi, can a iranian passport holder still renew his...

If your query is related to the possibility of renewing the UAE visa for the holder of an Iranian passport, here is the following information:
In the recent period, some news has spread stating that new visas are prohibited for some nationalities whose members are outside the Emirates, and among those Iranian nationalities, we recommend that you contact the General Administration to obtain more information, through the following link: General Administration
Finally,
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